Today in class, our teacher was discussing about the pathogenecity of the HIV virus.
He said that the binding between HIV virus and macrophages is done by the interaction between the GP120 of the virus and CD4 receptors,chemokine receptors(CCR-5 and CXCR-4) and fusin receptor present on Macrophages.
My doubt is I think CD4 receptors are present on T-helper cells only. Are they present on Macrophages too? Do i have a wrong notion about CD4 receptors? If not, then are there some other receptors responsible for the transfer of viral particles inside monocytes and dendritic cells?
Any extra information is appreciated.