I found this interesting:
http://www.wellcome.ac.uk/News/2009/News/WTX054009.htm
Prolactin
http://en.wikipedia.org/wiki/Prolactin
from above link: "The gene encoding prolactin in humans is located on chromosome 6"
http://en.wikipedia.org/wiki/Chromosome_6
A quick look at the wikipedia article on Chromosome 6 has me very interested, and wishing I majored in Biology/Anatomy or went to med school. I'm glad some of you people out there know this stuff and are researching it for us.
PS thought I would cite other relevant HW posts on this forum (should have google searched the site before posting sorry)
https://www.healingwell.com/community/default.aspx?f=38&m=1192273
https://www.healingwell.com/community/default.aspx?f=38&m=943972&p=1&ord=d