These studies detected two novel domains referred to as L1 and L2 with a variety of lymphoid but not HeLa extracts .
these studies detected two novel domains referred to as l1 and l2 with a variety of lymphoid but not hela extracts .
O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O B-DNA_domain_or_region O B-DNA_domain_or_region O O O O B-cell_component O O B-cell_component I-cell_component O