- Life Sciences
a foreign substance, usually a protein, that stimulates the production of one or more antibodies. The foreign substance, which could be a virus, bacterium or toxin, can be from the external environment or from within the body.
when humans construct or alter the genome of an organism.
a drug that inhibits (slows down) the action of the nervous system.
the structural and functional unit of the kidney, which filters the blood and produces urine....