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| ... cells, IgD's function is to signal the B cells to be activated. By being activated, B cells are ready to take part in the defense of the body in the immune system. During B cell differentiation, IgM is the exclusive isotype expressed by immature B cells. IgD starts to be expressed when the B cell exits the bone marrow to populate peripheral lymphoid tissues. When a B cell reaches ... |
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| ... Harpending és Alan Rogers antropológusok a ténybeli tudományos irodalom áttekintése után maguk is revideálták korábbi nézeteiket (,,Genetic Perspectives on Human Origins and Differentiation", in Annual Review of Genomics and Human Genetics, I. kötet, 361-385. old.). Mint írják: ,,Öt éve még azt mondtuk volna, hogy genetikai bizonyítékok egyértelműen alátámasztják a... |
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