Additional file 1: Figure S1. of CD271+ stromal cells expand in arthritic synovium and exhibit a proinflammatory phenotype

Multipotent differentiation capacity of SCs. CD271+ and CD271− synovial SCs were cultured under specific adipocytic, chondroblastic, or osteoblastic differentiation conditions. Representative images of differentiated SC cultures stained with oil red for adipocytes (a), Alcian Blue for chondroblasts (b), and Alizarin Red for osteoblasts (c). Original magnification, ×100. (PDF 258 kb