Fas ( CD95 ) and Fas ligand ( CD95L ) are an interacting receptor-ligand pair required for immune homeostasis .
fas ( cd95 ) and fas ligand ( cd95l ) are an interacting receptor-ligand pair required for immune homeostasis .
B-protein_molecule O B-protein_molecule O O B-protein_molecule I-protein_molecule O B-protein_molecule O O O O B-protein_N/A I-protein_N/A O O B-other_name I-other_name O