As direction and degree of laterality were reported in this study in both male and female mice, we selected plasma-luteinizing hormone concentration, which is a common trigger for both male and female gonadotropic hormones.
The extension of the conceptualization from the gonads to the brain also included the postulation of a new type of hormone: the gonadotropic hormones.
It is known as a gonadotrophic hormone as it affects the gonads (testes and ovaries) in mammals.
The gonadotrophic hormones and the gonads' own steroid hormones act together to maintain the prime function of the gonads: the production of mature eggs or sperm.