The first preparation of HGH was a pituitary corpses, and only in 1981 was made a recombinant drug somatotropin.
ການກະກຽມຄັ້ງທໍາອິດຂອງ HGH ແມ່ນຮ່າງກາຍ pituitary, ແລະພຽງແຕ່ໃນ 1981 ໄດ້ເຮັດໃຫ້ somatotropin ຢາ recombinant.