Figure 3. Immunhistochemistry for lymphocyte subsets in scleroderma skin. Lymphocyte subsets in forearm skin biopsies of three systemic sclerosis patients (SSc1, SSc2, SSc3) and two normal controls (C4, C5) were investigated by immunohistochemistry. Paraffin sections were stained for T cells (CD3, a-e), B cells (CD20, f-g) and plasma cells (CD138, k-o).