A model of the endocrine regulation of the female reproductive organs

A biocybernetical analysis was accomplished for a better understanding of the hormonal management in breast cancer therapy, which is based on reported experimental facts and observations. By this a graphentheoretical model of regulation could be obtained answering some unsolved questions. These questions concern the hypothalamic control of the LTH secretion, the regression of the reproductive organs, the significance of that cyclic testosterone secretion by the ovaries recently reported, and the importance of HCG in the establishment of pregnancy and in proliferation of mammary tissue.