Surprised that humans would have receptors keyed to plant chemicals, they carried out fu  rther research which showed that morphine bound to the receptors by mimicking these natural neuropeptides.
In the 1970s, neurochemists at Johns Hopkins University found what appeared to be specific receptors for the opiates morphine and heroin on neurons in the brain. Surprised that humans would have receptors keyed to plant chemicals, they carried out fu  rther research which showed that morphine bound to the receptors by mimicking these natural neuropeptides. Including the enkephalins, the beta variety found in the pituitary gland, and dynorphin, FTP, what are these natural painkillers which also depress  breathing and produce euphoria?
In the 1970s, neurochemists at Johns Hopkins University found what appeared to be specific receptors for the opiates morphine and heroin on neurons in the brain.
endorphins