Wyniki wyszukiwania:

Cancer is a worldwide public health problem. Each year, 6 million people die from cancer and 8.1million new cases are diagnosed.Cancers, however, arise from the hosts own tissues, and thus almost all the genes expressed by tumors are also expressed by normal tissues. Can the immune system attack "altered self" while sparing "self"? Another question is why the immune system would evolve to fight tumors? Nevertheless, immune recognition of cancers has now been well documented in humans. The main indicator of cancer is the uncontrolled growth and dispersion of cells as a result of abnormal...

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...