GREENSPA at SNYSYRV1.bitnet writes: > It seems to me that the current fad in neuroscience is nitric oxide >(just say NO), which does so much that I wonder if we need neurotransmitters. OK then ...... NO! This may be the current fad, but the hottest topic (see earlier posting) has been on the boil for at least a century. But we might be about to settle it. Paul Knox