Serious question. Is there any abundant source for Neuromelanin other than the human pineal gland? I noted that Google subsidiary Glaxo entered Haiti in 2010 to assist with earthquake victims, and then later in 2010 began making electronics using Neuromelanin. I realize almost mammal produces this, but from what I find, none come close to what humans produce.  Also, black humans always have much more melanin than white humans. Does anyone know if black people have more Neuromelanin as well?