n. the generic name for Viagra; a drug that cures impotence (*) capillary (*) sildenafil (*) fibre (*) excitation threshold

n. copulation (*) sexual intercourse (*) storage (*) secondary structure (*) anatomy

n. a substance that causes an allergic reaction (*) adenylate cyclase (*) allergen (*) melting point (*) suicide

n. a weak protease inhibitor that is applied in treating HIV; trade name: Invirase (*) saquinavir (*) thiamine (*) fungus (*) tightly-closed container

adj. related to an optically active molecule that rotates the plane of polarized light to the left (*) premature (*) levorotatory (*) smelly (*) autonomic

n. dissolved salt or ions in the body fluids (*) amprenavir (*) electrolyte (*) desmosome (*) chest pain

n. process in which substances are moved across a cell membrane from a region of low concentration to a region of high concentration (*) tendon (*) acceleration (*) carrier-mediated active transport (*) sex

v. to overstrain a joint so as to cause ligament injury (*) menstruate (*) notice (*) sprain (*) persist

adj. of blood (*) mitochondrial (*) hematic (*) sharp (*) swollen

n. the external membrane of an embryo (*) chorion (*) vision (*) scrotal sac (*) wrist