All definitions were retrieved from Dictionary.com

A:

Acetaminophen -a crystalline substance used as a headache and pain reliever and to reduce fever

Acquired Immunodeficiency Syndrome -(AIDS) a disease of the human immune system that is characterized cytologically especially by a reduction in the numbers of CD4-bearing helper T cells to 20 percent or less of normal thereby rendering the subject highly vulnerable to life-threatening conditions and to some that become life-threatening. AIDS is caused by infection with HIV commonly transmitted in infected blood especially during illicit intravenous drug use and in bodily secretions during sexual intercourse

(AIDS) -(Acquired Immunodeficiency Syndrome) a disease of the human immune system that is characterized cytologically especially by a reduction in the numbers of CD4-bearing helper T cells to 20 percent or less of normal thereby rendering the subject highly vulnerable to life-threatening conditions and to some that become life-threatening. AIDS is caused by infection with HIV commonly transmitted in infected blood especially during illicit intravenous drug use and in bodily secretions during sexual intercourse

Amebas -any of numerous freshwater, marine, or parasitic one-celled protozoa of the order Amoebida, characterized by a granular nucleus surrounded by a jellylike mass of cytoplasm that forms temporary extensions, or pseudopodia, by which the organism moves, engulfs food particles, and forms food vacuoles

Antibiotics -a substance, such as penicillin, that is capable of destroying or weakening certain microorganisms, especially bacteria or fungi, that cause infections or infectious diseases. Antibiotics are usually produced by or synthesized from other microorganisms, such as molds. They inhibit pathogens by interfering with essential intracellular processes, including the synthesis of bacterial proteins. Antibiotics do not kill viruses and are not effective in treating viral infections.

Antibodies -molecules produced by the body to attach to a virus and kill it before it attacks the cells

Antimicrobial -capable of destroying or inhibiting the growth of microorganisms

Antiviral -inhibiting or stopping the growth and reproduction of viruses

B:

Bacterial infection -an infection caused by bacteria. The growth of many disease-causing bacteria can be halted by the use of antibioticsstudy, and cultivation of bacteria and with their applications in medicine, agriculture, industry, and biotechnology

Bacteriologist -a branch of microbiology dealing with the identification, study, and cultivation of bacteria and with their applications in medicine, agriculture, industry, and biotechnology