1. Instead, it prevents immature insects from reaching maturity by mimicking juvenile hormone . 2. Juvenile hormone acid methyltransferase activity in imaginal discs of Manduca sexta prepupae.3. Juvenile hormone -specific esterases in the haemolymph of the tobacco hornworm, Manduca sexta.4. Instead, it acts as an insect growth regulator, mimicking natural juvenile hormone . 5. Pyriproxyfen is a juvenile hormone analog and an insect growth regulator. 6. Other amine and neuropeptide neurotransmitters may also inhibit juvenile hormone biosynthesis. 7. Juvenile hormone is related to thyroid hormone but doesn't use iodine.8. Juvenile hormone esterase is induced by factors naturally occurring in the head of insects.9. The corpora allata is responsible for the production of juvenile hormone ( JH ). 10. The Juvenile Hormone Titre During the Penultimate and Ultimate Larval Stadia of Trichoplusia ni.