tokens: Comparison of cDNA and genomic sequences reveals a 4-exon structure characteristic of the FOS family of genes .
folded_tokens: comparison of cdna and genomic sequences reveals a 4-exon structure characteristic of the fos family of genes .
labels: O O B-DNA_family_or_group O B-DNA_N/A I-DNA_N/A O O B-DNA_domain_or_region I-DNA_domain_or_region O O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O