tokens: We can now study regulatory regions and functional domains of the protein in the context of a true erythroid environment , experiments that have not been possible heretofore .
folded_tokens: we can now study regulatory regions and functional domains of the protein in the context of a true erythroid environment , experiments that have not been possible heretofore .
labels: O O O O O O O O O O O O O O O O O O O O O O O O O O O O O