<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Placenta ingestion enhances opiate analgesia in rats."^^ . "Analgesia, produced by either a morphine injection or footshock, was monitored (using a tail-flick test) in nonpregnant female rats. Analgesia was induced within minutes of having the rats eat on of several substances. When the substance eaten was rat placenta, both the morphine- and shock-induced types of analgesia were significantly grater than in controls that ingested other substances (or nothing). When footshock (hind-paw) was administered in conjunction with the opiate antagonist naltrexone, the analgesia produced was attenuated but detectable; in this case, placenta ingestion did not enhance the analgesia, suggesting that the effect of placenta is specific to opiate-mediated analgesia. It is possible that this enhancement of analgesia is one of the principal benefits to mammalian mothers of ingesting placenta and birth fluids (placentophagia) at delivery."^^ . "1985" . . "35" . "4" . . "Pergamon Press"^^ . . . "Physiology & Behavior"^^ . . . . . . . . . . . . . . "Mark B."^^ . "Kristal"^^ . "Mark B. Kristal"^^ . . "H.L."^^ . "Grishkat"^^ . "H.L. Grishkat"^^ . . "A. C."^^ . "Thompson"^^ . "A. C. Thompson"^^ . . . . . . "Placenta ingestion enhances opiate analgesia in rats. (PDF)"^^ . . . . . . "poef85.pdf"^^ . . . "Placenta ingestion enhances opiate analgesia in rats. (Image (PNG))"^^ . . . . . . "preview.png"^^ . . "HTML Summary of #5764 \n\nPlacenta ingestion enhances opiate analgesia in rats.\n\n" . "text/html" . . . "Behavioral Neuroscience" . .