Question

what is cd4 calls and what is their specificity to thier host​

Answer 1

Answer:

good evening

In molecular biology, CD4 (cluster of differentiation 4) is a glycoprotein found on the surface of immune cells such as T helper cells, monocytes, macrophages, and dendritic cells. It was discovered in the late 1970s and was originally known as leu-3 and T4 (after the OKT4 monoclonal antibody that reacted with it) before being named CD4 in 1984.[5] In humans, the CD4 protein is encoded by the CD4 gene.[6][7]