I quite like these small, informative Science Wednesday posts from Open Medicine Foundation and thought it might be nice to have a thread with a collection of them. Starting from last week's post. If you want to read the previous posts they are gathered here at OMF's website. What do T cells and B cells do? B cells produce antibodies to ‘capture’ invading germs. Sometimes they produce autoantibodies that mistakenly also target our own tissues, and some studies suggest this is happening in ME/CFS. T cells use other methods, including signalling via cytokine production. A subset known as ‘killer’ T cells directly target and eliminate infected cells.