follicle-stimulating hormone: a gonadotropic hormone that is secreted by the anterior pituitary and stimulates growth of Graafian follicles in female mammals, and activates the cells in male mammals that form sperm
substance: the real physical matter of which a person or thing consists
antistrophe: the section of a choral ode answering a previous strophe in classical Greek drama; the second of two metrically corresponding sections in a poem