gonadotrophicgonadotropicadj.

1931 Wiesner & Marshall in Q. Jrnl. Exper. Physiol. XXI. 147 (title) The Gonadotropic Hormones (ρ-Factors).

1931 Wiesner & Marshall in Q. Jrnl. Exper. Physiol. XXI. 148 It has been shown that the gonadotropic substances can produce haemorrhagic follicles and corpora atretica.

1936 Lancet 8 Aug. 309/2 It has afforded an opportunity of investigating the gonadotropic hormone production under the exceptional circumstances of pituitary hypofunction during gestation.

1938 Encycl. Brit. Bk. of Year 227/2 The adrenotrophic, thyrotrophic, and gonadotrophic hormones.

1957 Sci. News 44 85 The gonadotrophic hormones secreted by the pituitary gland stimulate equally both testis and ovary.

1968 R. H. Williams Textbk. Endocrinol. (ed. 4) ii. 32/1 A provisional separation of two types of gonadotropic cells has been made in the mouse by Barnes.

1970 Sci. Jrnl. June 46/3 The pituitary produces at least two gonadotrophic principles which in their turn stimulate the secretion of two quite separate hormones from the ovary—oestrogen and progesterone.

1957 Encycl. Brit. VIII. 434/1 Two gonadotrophins are secreted by the anterior pituitary, follicle-stimulating hormone (FSH) and luteinizing, or interstitial cell-stimulating, hormone (LH).

1966 New Scientist 15 Dec. 618/3 Gonadotrophins are the pituitary hormones which regulate the activity of the sex glands—the ovaries in the female, and the testicles in the male.

1968 Daily Tel. 12 Nov. 1/6 Mrs. Pennington..has been taking the fertility drug gonadotrophin.

1970 Sci. Jrnl. June 48/2 Demonstration of the presence of chorionic gonadotrophin is also the basis of nearly all pregnancy tests.

1937 Endocrinology July 489 (title) Excretion of gonadotropin by normal human males after the ingestion and injection of extracts of pregnancy urine.

1937 Endocrinology July 493 Biological and chemical differences may be presented as evidence for the existence of two or more gonadotropins, representing distinct products of internal secretion.

1964 H. H. Cole Gonadotropins p. iii Until the mode of action of gonadotropins becomes known, it is unlikely that uniformity of spelling will be achieved. Arguments based on etymology are persuasive for the use of either suffix. In this volume, the ‘h’ has been dropped, arbitrarily.