Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!haven!adm!cmcl2!lanl!beta!dd
From: dd@beta.lanl.gov (Dan Davison)
Newsgroups: sci.bio
Subject: Re: Who Has Immunity?
Summary: frogs, sponges
Message-ID: <24033@beta.lanl.gov>
Date: 5 Apr 89 01:03:36 GMT
References: <2600@tank.uchicago.edu>
Distribution: na
Organization: Los Alamos National Laboratory
Lines: 17

In article <2600@tank.uchicago.edu>, ogil@tank.uchicago.edu (Brian W. Ogilvie) writes:
> How far down in the animal kingdom is some type of immune system
> found? Do, say, mollusks have immune systems? What about annelids?

Frogs have recently been found to have Ig-type molecules, but I don't
recall the details.

At least 2 years ago in a Nature News & Views article someone said that
the self/non-self MHC/HLA (Major Histocompatibility Locus (mouse) and
Human Leucocyte Antigen (human) ) existed in sponges.  I think the
reference was "MHC-like".  I have since looked for the reference but
haven't found it.

dan davison/theoretical biology/t-10 ms k710/los alamos national laboratory
los alamos, nm 875545/dd@lanl.gov (arpa)/dd@lanl.uucp(new)/..cmcl2!lanl!dd
"...the wise man is one who never sets himself apart from living
things..." Le Guin, _The Farthest Shore_