tokens: The CD20 ( B1 ) gene encodes a B cell-specific protein involved in the regulation of human B cell proliferation and differentiation .
folded_tokens: the cd20 ( b1 ) gene encodes a b cell-specific protein involved in the regulation of human b cell proliferation and differentiation .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O O O O O O