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.
For example, a protein called GP120 sits on the surface of HIV and allows the virus to attach to the target cell. GP120 binds to two proteins on the cell. After the proteins connect, the virus delivers its genetic material into the cell.or example, a protein called GP120 sits on the surface of HIV and allows the virus to attach to the target cell. GP120 binds to two proteins on the cell. After the proteins connect, the virus delivers its genetic material into the cell.