tokens: The normal cell cycle is regulated by several molecules , such as the tumor-suppressor protein pRb , the G1 cyclins , the cyclin-dependent kinases , and their inhibitors .
folded_tokens: the normal cell cycle is regulated by several molecules , such as the tumor-suppressor protein prb , the g1 cyclins , the cyclin-dependent kinases , and their inhibitors .
labels: O O O O O O O O O O O O O B-protein_molecule I-protein_molecule B-protein_molecule O O B-protein_family_or_group I-protein_family_or_group O O B-protein_family_or_group I-protein_family_or_group O O O B-other_name O