To date , a large number of receptors for IL-12 have been found only on PBMC following activation with PHA or IL-2 .
to date , a large number of receptors for il-12 have been found only on pbmc following activation with pha or il-2 .
O O O O O O O O O B-protein_molecule O O O O O B-cell_type O O O B-protein_molecule O B-protein_molecule O