tokens: By extensive nucleotide sequence and Northern blot analysis , these cDNA clones were found to originate from approximately 42 different genes ( HZF 1-42 ) of which only 8 have previously been described .
folded_tokens: by extensive nucleotide sequence and northern blot analysis , these cdna clones were found to originate from approximately 42 different genes ( hzf 1-42 ) of which only 8 have previously been described .
labels: O O B-other_name I-other_name O B-other_name I-other_name I-other_name O O B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O O O