S: (n) prostate gland, prostate (a firm partly muscular chestnut sized gland in males at the neck of the urethra; produces a viscid secretion that is the fluid part of semen)
S: (n) thymus gland, thymus (a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age)
S: (n) corpus luteum (yellow endocrine tissue that forms in a ruptured Graafian follicle following the release of an ovum; it degenerates after a few days unless pregnancy has begun)