Bioassay of pituitary prolactin of the lizard uromastix hardwickii

ABSTRACT

The present study has been designed to evaluate the pituitary prolactin in the lizard Uromastix hardwickii. Pituitary glands were removed from 24 lizards and a suspension was prepared. This suspension was injected in the crop sac glands of a group of 12 pigeons. Another group of 12 pigeon was injected distilled water instead. Results of the study indicate a mean crop gland diametric response of 0.8cm following pyrogen free distilled water administration. Whereas following the administration of pituitary suspension the response was of 2.12cm. The first response was due to injection stress and the latter response was due to PRL