Mutants that cannot grow on defined minimal medium without some nutritional additive are known as

Which class of antibodies is generally less efficient at activating complement but may cause extravascular hemolysis or destruction of the red blood cells outside the circulation?

a. IgD b. IgE c. IgG d. IgM

Which type of asthma is also referred to as infectious asthma?

A. intrinsic B. extrinsic C. status asthmaticus D. episodic