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  • Title: Fine structure of rat prolactin cells after treatment with a long acting depot contraceptive.
    Author: Aumüller G, Wagner R, Gräf KJ.
    Journal: Acta Endocrinol (Copenh); 1978 Oct; 89(2):251-62. PubMed ID: 696178.
    Abstract:
    Adult intact female rats were injected with norethisterone oenanthate (NOe), with or without simultaneous administration of CB-154, or with oestradiol benzoate (OeB). The ultrastructure of prolactin (PRL) cells due to the various treatment regimens was investigated and compared with the situation found in controls. Both after treatment with NOe or NOe plus CB-154, the number of PRL cells increased and displayed various ultrastructure signs of stimulation. The determination of serum PRL levels coincides with these morphological findings. In all treated animals mammary gland DNA content was significantly increased. The results presented indicate that proliferative changes in the rat mammary gland depend predominantly on the presence of progestogenic activities additionally to PRL, whereas the effect of oestrogens was regarded as an indirect effect via their PRL-stimulatory action.
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