gamma-endorphin n. see endorphin.
folk psychology 1. the everyday, commonsense, implicit know...
M-cell n. any of various large neurons in the two most vent...
Debré–Sémélaigne syndrome see Kocher–Debré–Sémélaigne syndr...
penetration n. the entry of the penis into the vagina. In t...
false negative a case that is incorrectly excluded from a g...