PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17955979-2 2007 Milk contains a complex mixture of nucleotides, nucleosides, and nucleobases, and because of the reported differences in their relative levels in bovine and human milks, pediatric formulas are increasingly supplemented with nucleotides. nucleobases 65-76 Weaning weight-maternal milk Bos taurus 0-4