PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7677944-3 1993 Since the mus306 and mus308 stocks also carry secondary phr mutations, their partial deficiency in repair of pyrimidine dimers may also be the result of that secondary mutation. pyrimidine 109-119 mus306 Drosophila melanogaster 10-16