They have been genetically modified to secrete various human hormones, express promoter sequences from other fish, and to make antimicrobial proteins and a protein that makes the medaka glow fluorescent green.
Also induces the mesenchymal cells to secrete FGF10, which acts through WNT3A to sustain the AER’s expression of FGF8.
It produces the potent pumiliotoxin B, but its small size limits the amount of poison it can secrete.
Furthermore, the pineal gland is a hypothetical candidate for producing a mind's eye; Rick Strassman and others have postulated that during near death experiences (NDE's) and dreaming, the gland might secrete a hallucinogenic chemical 'N,N-Dimethyltryptamine' (DMT) to produce internal visuals when external sensory data is occluded.
Prosavin uses Oxford BioMedica's Lentivector delivery system to transfer three genes, aromatic amino acid dopa decarboxylase, tyrosine hydroxylase and GTP-cyclohydrolase 1, to the striatum in the brain, reprogramming transduced cells to secrete dopamine.
The two exceptions are: the Rhabdophis keelback snakes secrete poison from glands they get from the poisonous toads they consume, and similarly, certain garter snakes from Oregon retain toxins in their livers from the newts they eat.
His most significant contribution was the discovery that neurosecretory cells in the brain of the South American kissing bug, Rhodnius prolixus, secrete a crucial growth hormone, prothoracicotropic hormone (PTTH), which regulates the process of metamorphosis.