Microscope: [Greek: (micron)= small + (skopein) = to look at].Enables us to view small objects by magnification of its image.An optical instrument that is used to observe tiny objects often that cannot be seen at all with the unaided human eye. The first useful microscope was developed in the Netherlands between 1590 and 1608. Anton van Leeuwenhoek (1632-1723) is the father of microscopy. He was the first person to describe bacteria (from teeth scrapings), protozoans (from pond water), helped to prove the theory of blood circulation.He gained much of his inspiration form reading Robert...

Diagnostic pathology is indeed so vast, that a binocular vision is often needed to unravel the mystery of the many concurrent interactions occurring at different sites of the lesional tissue. Immunohistochemistry provides the pathologist with the right perspective in order to identify the complexity of a disease process. This library work covers selected topics and references, so that I and the readers are not overwhelmed by the otherwise exhaustive technical aspects of the many observed phenomena and the subsequent diverse interpretations of the same. I hope professionals and students in the...