A Adverse changes in the environment

B Interaction between hereditary factor genes and the environment

C Mutation and stress

B Epilepsy

C Neurosis

D Psychosis

A insufficiency of organ donors

C religious or ethnic considerations

D lack of effective surgical techniques

A Influenza

C Blastomycosis

D Syphilis

A Eating imperfectly cooked pork

B Tse-tse fly

C Mosquito bite

A Histamine and dopamine

C Interferons and opsonin.

D Interferons and histones.

A surving malarial parasites in human carriers

C monkeys

D mosquito larvae in permanent waters

A LSD

B Hasish

C Mescaline

A Locomotion

B Massive nucleus

D Reproduction

B Perforin production

C Passive immunity

D Antibody production