Butyrophilin subfamily 1 member A1 (BTN1A1)

May be the secretion of milk-fat droplets. May act as a specific membrane-associated receptor to the association of cytoplasmic droplets with the apical plasma membrane (By similarity).

Inhibits the proliferation of CD4 and CD8 T-cells triggered by anti-CD3 antibodies, T-cell metabolism and IL2 and IFNG secretion (By similarity). .