PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9463554-4 1998 An earlier extended dominant lethal study of male CD-1 mice exposed by inhalation to 12.5 ppm and 1250 ppm of 1,3-butadiene for 6 h/day, 5 days/wk, for 10 weeks produced an increase in F1 abnormalities and late deaths at 12.5 ppm and in early deaths at 1250 ppm. 1,3-butadiene 110-123 CD1 antigen complex Mus musculus 50-54