SELL and sarcoidosis: Of all markers tested the lymph node homing receptor CCR7 and CD15s (sialyl lewis x, expressed by Tregs in sarcoidosis) were lower in MulTreg, whilst gut homing integrin beta 7 (β7) showed a trend for increased expression in MulTreg according to both MFI and frequency (Figures 2G–I and S2C).