Mahmood Ahmad, Iftikhar Mahmood, Ruqaiya Hasan, Mansoor Ahmad.
Effects of Human Chorionic Gonadotropin (HCG) on pituitary prolactin (PRL) in the lizard, Uromastix hardwickii.
Pak J Pharm Sci Jan ;17(2):21-7.

A consideration of the data indicates that 45 IU human chorionic gonadotropin (hCG) treated lizard pituitaries, extracted after 30 and 60 minutes gave a mean crop-sac diametric response of 2.15 cm and 2.13 cm respectively in pigeons. The role of hCG in accelerating the synthesis of pigeon`s milk is extra ordinary, and it seems that hCG exhibits this effect via lizard pituitary lactotrophs.

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