Immunoglobulin N

[camplte1 at wkuvx1.bitnet]

I am interested in receiving information as to where I could find
articles on Immunoglobulin N, found in lungfish, groupers, turtles,
ducks, and marsupials.  A listing of articles would be nice.  Also,
any discussion on Ig-N would be welcome.  I have a few ideas on the
evolutionary aspects of Ig-N and why it is found in these particular
organisms.

Troy Earl Camplin