1. Peake GT, McKeel DW, Jarett L, et al: Ultrastructural, histologic and hormonal characterisation of a prolactin rich human pituitary tumour. J Clin Endocrinol Metab 29:1383, 1969.
2. Lloyd HM, Meares JD, Jacobi J: Effects of oestrogen and bromocriptine on in vivo secretion and mitosis in prolactin cells. Nature (Lond) 255:497, 1975.
3. Phelps C, Bartke A: Effect of chronic hyperprolactinemia on tuberoinfundibular dopaminergic neurons: Histofluorescence in male rats. In MacLeod RM, Thorner MO, Scapagnini U (eds): Prolactin. Basic and Clinical Correlates. Liviana, Padova, 1985, p. 615.
4. Franks S: Regulation of prolactin secretion by oestrogens: Physiological and pathological significance. Clin Sci 65:457, 1983.
5. Davis JRE, Selby C, Jeffcoate WJ: Oral contraceptive agents do not affect serum prolactin in normal women. Clin Endocrinol (Oxf) 20:427, 1984.