FTP, identify these testosterone-producing cells in the male testes named for their German discoverer.
Their notable features include superabundant smooth ER, mitochondria, and lipid droplets, as well as a unique subcellular structure of unknown function known as the Rienke crystal. Bouin and Ancel suggested they might have a secretory function, and only in the 1930s was the makeup of those secretions identified. These cells' activity is controlled by luteinizing hormone, and their primary product provides negative feedback by reducing gonadotropic hormone secretion at the hypothalamus. Also called interstitial cells, their main role is in support of the nearby Sertoli cells. FTP, identify these testosterone-producing cells in the male testes named for their German discoverer.
Their notable features include superabundant smooth ER, mitochondria, and lipid droplets, as well as a unique subcellular structure of unknown function known as the Rienke crystal.
{Leydig} cells (accept {interstitial} cells until mentioned)