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Multimodal Torus in the Weakly Electric Fish Eigenmannia
ISBN: 9783540125174 / Angielski / Miękka / 72 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Ever since the behavioral work of Lissrnann (1958), who showed that the weak electric discharges of some families of fish (hitherto considered useless for prey capture or for scaring away enemies) are part of a strange sensory system, these fish have attracted attention from biologists. The subsequent discovery of the electroreceptors in the skin of gymnotids and mormyrids (Bullock et al. 1961; Fessard and Szabo 1961) and the evidence that the ampullae of Lorenzini of nonelectric sharks and rays are also electro- receptors (Digkgraaf and Kalmijn 1962) was a start for a lively branch of...
Ever since the behavioral work of Lissrnann (1958), who showed that the weak electric discharges of some families of fish (hitherto considered useless...
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407,25 |
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Structure and Fiber Connections of the Hippocampus: A Comparative Study
ISBN: 9783540130925 / Angielski / Miękka / 76 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Of all cytoarchitectonic structures in the brain of mammals, the hippocampus is perhaps the most conspicuous because of its unusual macroscopic and micro- scopic appearance. During phylogeny, the hippocampus has developed from a single cortical plate in amphibia into a complicated, three-dimensional convo- luted structure in mammals. Because of its clear lamination into axonal, perikaryal, and dendritic layers, the hippocampus has often been considered a simple cortex model. Indeed, this trilaminated construction resembles perhaps the least complicated type of neuronal cortex. There is a...
Of all cytoarchitectonic structures in the brain of mammals, the hippocampus is perhaps the most conspicuous because of its unusual macroscopic and mi...
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407,25 |
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Evolution of Jaw Mechanisms in Ornithopod Dinosaurs
ISBN: 9783540131144 / Angielski / Miękka / 112 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. The Ornithopoda, one of five suborders within the Ornithischia, was originally proposed by Marsh in 1881 to include those bipedal dinosaurs possessing a predentary bone fitted over the rostral end of the mandibles. Ornithopods as recognized today can be further characterized by moderately long facial skele- tons equipped with well-developed, often toothless premaxillae and moderate to large external nares. Maxillary and dentary dentitions vary but usually consist of at least one replacement series beneath the functional set; some have many rows of successional teeth. Tooth morphology suggests...
The Ornithopoda, one of five suborders within the Ornithischia, was originally proposed by Marsh in 1881 to include those bipedal dinosaurs possessing...
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407,25 |
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The Medial Geniculate Body of the Cat
ISBN: 9783540132547 / Angielski / Miękka / 100 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. In the operation of reasoning, the mind does nothing but run over its objects, as they are supposed to stand in reality, without adding any thing to them or diminishing any thing from them. If I examine the Ptolomaic and Copernican systems, I endeavour only, by my inquiries, to know the real situation of the planets; that is, in other words, I endeavour to give them, in my conception, the same relation that they bear towards each other in the heavens. To this operation of the mind, therefore, there seems to be always a real, though often unknown standard, in the nature of things; nor is truth...
In the operation of reasoning, the mind does nothing but run over its objects, as they are supposed to stand in reality, without adding any thing to t...
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cena:
203,61 |
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Sertoli Cells and Leydig Cells in Man
ISBN: 9783540136033 / Angielski / Miękka / 106 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. The testis is composed of seminiferous tubules and interstitial tissue. The most important component of the interstitial tissue are the testosterone-producing Leydig cells. The seminiferous tubules contain the successive generations of germ cells, which can only exist in the presence of Sertoli cells. Sertoli cells mediate the effect of testosterone, which is indispensable for the maintenance of spermatogenesis. Consequently, the function of the Sertoli cells depends large- lyon the function of the Leydig cells, and a local control mechanism between the two cell systems has been assumed....
The testis is composed of seminiferous tubules and interstitial tissue. The most important component of the interstitial tissue are the testosterone-p...
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407,25 |
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The Development of the Vertebral Column
ISBN: 9783540137306 / Angielski / Miękka / 124 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. 3. 11 Stage XI (ca. 10. 5-12. 5 mm) 48 3. 11. 1 Axial Relations 48 3. 11. 2 Lateral Relations 49 3. 11. 3 Summary . . . . 52 3. 12 Stage XII (ca. 13-16 mm) 53 3. 12. 1 Axial Relations 53 3. 12. 2 Lateral Relations 56 3. 12. 3 Summary 59 4 Discussion . . . . . 60 4. 1 Introduction 60 4. 2 Early Differentiation of the Somite Mesoderm 60 4. 2. 1 Dermatome . . . . 60 4. 2. 2 Myotome . . . . . . . . . . 61 4. 2. 3 Somitic Mesenchyme . . . . . 61 4. 3 Development of the Axial Mesenchyme 63 4. 4 Development of the Somitic Mesenchyme 66 4. 4. 1 Segmentation Process in the Somitic Mesenchyme 66 4. 4....
3. 11 Stage XI (ca. 10. 5-12. 5 mm) 48 3. 11. 1 Axial Relations 48 3. 11. 2 Lateral Relations 49 3. 11. 3 Summary . . . . 52 3. 12 Stage XII (ca. 13-1...
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407,25 |
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The Nucleus Basalis-Neostriatum Complex in the Goose (Anser Anser L.)
ISBN: 9783540153382 / Angielski / Miękka / 86 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. In birds, the beak is the most important organ for manipulative actions: its manipulative capabilities vary as much as those of the forepaws and snouts of mammals. For the peripheral parts and at brainstem levels, the sensorimotor circuit of the avian oral region is roughly similar to the mammalian, but is strikingly different at higher levels of the central nervous system (CNS) (Ariens- Kappers et al. 1936). Our field of interest is the organization of the telencephalic areas involved in the manipulative actions of the bill. The goose was chosen as a subject because of the extensive...
In birds, the beak is the most important organ for manipulative actions: its manipulative capabilities vary as much as those of the forepaws and snout...
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407,25 |
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Die Gewebe Des Menschen Und Der Säugetiere: Ein Atlas Zum Studium Für Mediziner Und Biologen
ISBN: 9783540190073 / Niemiecki / Miękka / 399 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. In der vorliegenden 2. Auflage dieses erfolgreichen Atlaswurden nach kritischer Durchsicht und Analayse Fehlerkorrigiert, einige Texte zur Beseitigung von Unklarheitenge{ndert und mehrere Bildtafeln vervollst{ndigtoder neugezeichnet, um mit den j}ngsten Forschungsergebnissen aufdem Gebiet der Histologie Schritt zu halten. Die Literatur-angaben wurden ebenfalls umfassend aktualisiert.
In der vorliegenden 2. Auflage dieses erfolgreichen Atlaswurden nach kritischer Durchsicht und Analayse Fehlerkorrigiert, einige Texte zur Beseitigung...
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cena:
532,86 |
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The Development of the Larval Pigment Patterns in Triturus Alpestris and Ambystoma Mexicanum
ISBN: 9783540516729 / Angielski / Miękka / 101 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. In the animal world, pigments and colour pigment patterns play an important role. Pigments in the epidermis offer protection against solar radiation, and the various colour patterns provide the animals with concealment, advertisement and disguise (Cott 1940). The study of pigment cells and colour patterns is a multidisciplinary research field which includes developmental biology (determination, differenti- ation, migration), genetics (phenotypic gene expression, colour mutants), cell biology (ultrastructure, organelles, cell surface), biochemistry (enzymes, metabo- lism), physiology (control...
In the animal world, pigments and colour pigment patterns play an important role. Pigments in the epidermis offer protection against solar radiation, ...
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cena:
407,25 |
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Axonal Regeneration in the Mammalian Central Nervous System: A Critique of Hypotheses
ISBN: 9783540517573 / Angielski / Miękka / 121 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. This state-of-the-art review links the experimental data into a cohesive and critical account of CNS regeneration. Research findings are discussed in terms of their relevance to one (or more) of thirteen hypotheses concerned with regeneration in the mammalian CNS. Research findings reviewed include: regeneration in developing mammals and in submammalian vertebrates, the use of transplants and/or pharmacological treatments, in vitro studies on neurotrophic and neurite promoting factors and their potential relevance to CNS regeneration in vivo, and in vitro studies on the types of glial cells...
This state-of-the-art review links the experimental data into a cohesive and critical account of CNS regeneration. Research findings are discussed in ...
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cena:
407,25 |
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Histophysiology of the Circulating Platelet
ISBN: 9783540522584 / Angielski / Miękka / 96 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. 1. 1 Platelets in Hemostasis and Thrombosis: A Brief Overview For more than 100 years the dominant role of blood platelets in hemostasis and thrombosis has been well documented. Seven years before their identification as a distinct class of blood corpuscles by Bizzozero (1882), Zahn (1875), using intravital microscopic observations, described the growth of an arterial thrombus as the result of "continued apposition of colorless blood corpuscles along the direction of blood flow. " A hallmark still valid today was set by Eberth and Schimmel busch (1888), who clearly divided the formation of...
1. 1 Platelets in Hemostasis and Thrombosis: A Brief Overview For more than 100 years the dominant role of blood platelets in hemostasis and thrombosi...
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407,25 |
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Cell Proliferation and Cytogenesis in the Mouse Hippocampus
ISBN: 9783540536895 / Angielski / Miękka / 83 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. In the present work, processes of cell proliferation, cell death, neurogenesis, and gliogenesis in the mouse hippocampus were studied. The mapping of distribution of hippocampal mitoses and counting of their number allowed a more precise definition of the data concerning the disposition and age reduction of proliferative sites in Ammon's horn and the dentate gyrus in the mouse. As a result, the following generalized scheme of development and age reduction of the germinal zones in the mouse hippocampus has been suggested. 1. Ammon's horn a) The ventricular zone, from the beginning of formation...
In the present work, processes of cell proliferation, cell death, neurogenesis, and gliogenesis in the mouse hippocampus were studied. The mapping of ...
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407,25 |
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The Early Development of the Neopallial Wall and Area Choroidea in Fetal Rats: A Light and Electron Microscopic Study
ISBN: 9783540539100 / Angielski / Miękka / 76 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. This monograph considers the early preneural period of brain development and the early development of the neopallial wall and the choroidal area in vertebrates before the appearance of nerve cells. It includes original research and a review of pertinent literature.
This monograph considers the early preneural period of brain development and the early development of the neopallial wall and the choroidal area in ve...
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cena:
407,25 |
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Cytokeratins in Intracranial and Intraspinal Tissues
ISBN: 9783540551614 / Angielski / Miękka / 82 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. 1. 1 The Cytokeratins as a Member of the Intermediate Filament Protein Family Intermediate filaments together with microtubules and actin microfilaments make up the filamentous cytoskeleton found in the cytoplasm of vertebrate cells. Recently, intermediate filament proteins have also been described in invertebrates, but their chemistry is not yet known (for review see Biessmann and Walter 1989). These filaments (about 10 nm in diameter) used to be categorized into five classes - cytokeratin, vimentin, desmin, glial fibrillary acidic protein (GFAP), and neurofilaments (NFs). The expression of...
1. 1 The Cytokeratins as a Member of the Intermediate Filament Protein Family Intermediate filaments together with microtubules and actin microfilamen...
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cena:
541,33 |
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The Amniotic Fluid Compartment: The Fetal Habitat
ISBN: 9783540551621 / Angielski / Miękka / 100 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. This work attempts to sketch a coherent picture of the amniotic fluid com- partment, its borders, and the interactions occurring between fetus and amniotic fluid, for it is this compartment which for 10 months provides the habitat in which the fetus and its functions develop. As a matter of course, our mor- phological studies had to be limited to the situation prevailing at the full term of pregnancy. This portrayal purposely neglects the placenta, which is already the subject of an extraordinary profusion of literature. The other aspects of the embryonic sac have been overshadowed to date by...
This work attempts to sketch a coherent picture of the amniotic fluid com- partment, its borders, and the interactions occurring between fetus and amn...
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cena:
407,25 |
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The Efferent System of Cranial Nerve Nuclei: A Comparative Neuromorphological Study
ISBN: 9783540562078 / Angielski / Miękka / 92 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. This study outlines a new approach to the use of comparative neuromorphology, dealing with the organization of the efferent nuclei of cranial nerves. The authors use the cobalt labelling technique to identify neuron types and follow their presence or absence in different species.
This study outlines a new approach to the use of comparative neuromorphology, dealing with the organization of the efferent nuclei of cranial nerves. ...
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cena:
407,25 |
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Development of the Rat Spinal Cord: Immuno- And Enzyme Histochemical Approaches
ISBN: 9783540571735 / Angielski / Miękka / 166 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. The studies described here were carried out in the Neuroregul- ation Group, Department of Physiology, University of Leiden, the Netherlands. Over the last decade, this group, in close collaboration with the Department of Neurosurgery of the Academic Hospital of Leiden, has studied the development of the central nervous system from a neuroanatomical as well as a clinical perspective. During this period, the expression of several morphore- gulators in the developing rat spinal cord was extensively investigated. Parallel studies focused on the development of the spinal cord fiber systems, which...
The studies described here were carried out in the Neuroregul- ation Group, Department of Physiology, University of Leiden, the Netherlands. Over the ...
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cena:
407,25 |
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Histophysiology of the Obesity-Diabetes Syndrome in Sand Rats
ISBN: 9783540579137 / Angielski / Miękka / 95 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. The book gives a review of the state-of-the-art of recent investigations of the adipositas diabetes syndrome of sand rats kept under laboratory conditions and given various diet regimes. Measurements of specific activities and flux rates in carbohydrate and fat metabolism determined by different analytical methods in vitro and in vivo provide insights into the pathophysiology and pathobiochemistry of different forms of the diabetic syndrome which cannot be obtained in humans.
The book gives a review of the state-of-the-art of recent investigations of the adipositas diabetes syndrome of sand rats kept under laboratory condit...
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cena:
407,25 |
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Anatomie Kompakt
ISBN: 9783540580409 / Niemiecki / Miękka / 480 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Anatomie kompakt Der rote Faden durch die Anatomie fur alle, die anatomische Fakten und Zusammenhange nicht nur verstehen, sondern auch behalten wollen; das Tabellenwerk, dessen Ubersichtlichkeit Ihnen hilft, Prufungshurden mit Schwung zu nehmen; ein Buch, das die Kluft zwischen Vorklinik und Klinik uberbruckt. Wie ist es dem Autor gelungen, diesen Anspruchen gerecht zu werden? Ganz einfach: Durch die stichwortartige Darstellung der gesamten makroskopischen und mikroskopischen Anatomie in Tabellenform. Dabei ist in nahezu allen Tabellen eine Spalte den funktionellen und klinischen...
Anatomie kompakt Der rote Faden durch die Anatomie fur alle, die anatomische Fakten und Zusammenhange nicht nur verstehen, sondern auch behalte...
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cena:
190,29 |
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The Ubiquitin System in Health and Disease
ISBN: 9783642098802 / Angielski / Miękka / 191 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. The ubiquitin system has two major functions in eukaryotic cells: it r- ulates protein degradation, which is essential for normal cellular fu- tion and for the removal of potentially harmful, damaged, or misfolded proteins, and it controls protein activity by regulating protein-protein interactions and subcellullar localization. The ubiquitin system is thus involved in processes as diverse as cell cycle progression, signal tra- duction, gene transcription, and DNA repair. Not surprisingly, defects in the ubiquitin system have been linked with numerous diseases such as cancer, in?ammation,...
The ubiquitin system has two major functions in eukaryotic cells: it r- ulates protein degradation, which is essential for normal cellular fu- tion an...
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cena:
610,90 |
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