Among the many mammalian hormones are acth , sex hormones , thyroxine , insulin , and epinephrine . Insect hormones include ecdysone , thoracotropic hormone , and juvenile hormone . Plant hormones include ethylene , abscisin , auxins , gibberellins , and cytokinins .

哺乳动物有许多激素，像是促肾上腺皮质激素，性激素，甲状腺素，胰岛素与肾上腺素。昆虫的激素有蜕皮素，胸激素与青春激素。植物激素有脱落素，生长激素，赤霉素与细胞分裂素。