Fig. 3From: The effects of dopamine receptor 2 expression on B cells on bone metabolism and TNF-α levels in rheumatoid arthritisIn-situ immunofluorescence stainings of B cell DR2 expressions in the synovial tissues. a and b Representative images of DR2 expression on B cells from RA (N = 4) and OA (N = 3) patients are shown. Sections were counterstained with DAPI (blue) to allow visualization on nuclei; magnification, 400×. DR2-positive cells are marked by an arrowheadBack to article page