Th1 and Th2 responses: what are they?
This is an excellent review article to one of the more powerful routes to which human disease is connected and controlled. Th1 and Th2 are types of white blood cells, and each group has a job to do. The body normally keeps a good balance, but in many conditions the balance is tipped one way or another and all hell breaks lose.
bmj.com Berger 321 (7258): 424
