tokens: Although the assay involves the dramatic loss of red cell production , it should be possible to define important regulatory domains that can then be assayed using less stringent systems , such as cell-free extracts for in vitro transcription .
folded_tokens: although the assay involves the dramatic loss of red cell production , it should be possible to define important regulatory domains that can then be assayed using less stringent systems , such as cell-free extracts for in vitro transcription .
labels: O O O O O O O O B-other_name I-other_name I-other_name O O O O O O O O O O O O O O O O O O O O O O B-cell_component I-cell_component O B-other_name I-other_name I-other_name O