An agent that stimulates milk production or secretion. ... Origin: Lacto-+ G. -gen, producing ... Human placental lactogen (HPL), lactogen isolated from human placentas and structurally similar to somatotropin; its biological activity weakly mimics that of somatotropin and prolactin; secreted into maternal circulation; a deficiency of HPL during pr... Found on http://www.encyclo.co.uk/local/20973
(lak´to-jәn) any substance that enhances lactation. human placental lactogen(HPL) (hPL) a hormone secreted by the placenta, which disappears from the blood immediately after delivery. It has lactogenic, luteotropic, and growth-promoting ac... Found on http://www.encyclo.co.uk/local/21001