CD1a,CD1b,and CD1c _____.(Select All That Apply.)

CD1a,CD1b,and CD1c _____.(Select all that apply.)

A) are highly polymorphic and bind to a variety of pathogen-specific lipids
B) are encoded within the MHC on chromosome 6
C) express antigen-binding sites distinct from classical MHC class I molecules
D) are associated with β₂-microglobulin at the surface of antigen-presenting cells
E) can bind to lipids in the endoplasmic reticulum or in endocytic vesicles.