(A) a-lymphocytes

(B) lymphocytes

(C) antibodies

(D) antigens

(A) bactericidal antibiotic

(B) bacteriostatic antibiotic

(C) sulfonamides antibiotic

(D) single cell protein antibiotics

(A) bacteria

(B) minerals

(C) fungi and plants

(D) animals

(A) narrow-spectrum antibiotics

(B) broad-spectrum antibiotics

(C) bactericidal antibiotics

(D) bacteriostatic antibiotics

(A) streptomycin

(B) aspirin

(C) terramycin

(D) digitalis

(A) antiseptics

(B) antigens

(C) anti vaccines

(D) anti pathogens

(A) emotional feelings

(B) stomach cancer

(C) loss of memory

(D) suicidal thoughts

(A) mushroom

(B) foxglove

(C) flowers of cannabis

(D) cactus

(A) botany

(B) pharmacology

(C) paleontology

(D) ecology

(A) antibiotics and sedatives

(B) vaccines

(C) analgesics

(C) all of above