This study says that CD8 cells inhibit disease by targeting CD4 cells...just like suppressor cells of yesteryear...but only a few weeks ago we were being told by others that CD8 cells were causing disease. This is is why reading one paper and making an opinion can be a mistake...you just have to take a step back and assimilate a lot of data to try and make an opinion where the most consistent story lies. This is what Prof G does when he uses his inbuilt computer bank to spread the knowledge. However if the science lemmings follow a bad idea they have us jumping off the cliff as we reinvent the wheel.