Using the peroxidase-antiperoxidase immunocytochemical staining technique, prolactin and growth hormone cells have been identified and described in the ovine pituitary. The image analysing computer, Quantimet 720, was used to assess accurately the size range of the secretory granules in these cell types. The area size distributions of the prolactin and growth hormone granules are similar. An increased proportion of larger granules was observed in the prolactin cells post-partum. Serial sections stained alternately for prolactin or growth hormone confirmed that the cells contain either prolactin or growth hormone but not both.
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Parry, D.M., McMillen, I.C. & Willcox, D.L. Immunocytochemical localisation of prolactin and growth hormone in the ovine pituitary. Cell Tissue Res. 194, 327–336 (1978). https://doi.org/10.1007/BF00220399
- Growth hormone
- Ovine pituitary
- Granule size