I was perusing PLoS just now and I saw this interesting looking paper on the analysis of MHC molecules from possums. The paper also provides interesting insights into the evolutionary origins between the complex MHC gene regions of higher mammals (us!) and the rather minimal MHC gene regions of birds. Although I haven't read the paper fully just yet, it's yet another paper that provides yet more answers, questions and insights into how the immune system evolved.
So much interesting research to write about, so little time.
Reconstructing an Ancestral Mammalian Immune Supercomplex from a Marsupial Major Histocompatibility Complex. Belov K. et al 2006. PLoS, 4:317-328.
