1 Most of these diseases are infections, caused by a variety of bacteria, viruses, and parasites that can be foodborne. 2  Other diseases are poisonings, caused by harmful toxins or chemicals that have contaminated the food, for example, poisonous mushrooms.
(cluster designation 4) symbol for a glycoprotein expressed on the surface of helper T lymphocytes and other immune cells. CD4 serves as a receptor for human immunodeficiency virus envelope glycoprotein gp120.
doi:10.1038/nrmicro3503. a | Schematic representation of the mature HIV-1 virion, showing the viral glycoprotein envelope (Env, which is made of glycoprotein 120 (gp120) and gp41 subunits), as well as the Gag polypeptide-derived proteins matrix (MA), capsid (CA) and nucleocapsid (NC).