Duchenne smile a smile characterized by bilaterally symmetr...
reflexivity n. 1. a bidirectional relationship...
American optical H–R–R plates see Hardy–Rand–Rittler pseudo...
hybrid n. 1. in genetics, the product of crossb...
GHB gamma-hydroxybutyrate: sodium oxybate, a potent CNS dep...
alpha-adrenergic receptor a receptor that binds norepinephr...