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.
HIV Envelope Glycoprotein Envelope protein attaches HIV to the cells that it infects and powers fusion of the virus with the cell membrane HIV envelope glycoprotein, with the membrane-spanning portion shown schematically at the bottom.