PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 22640808-1 2012 Mice null for Cyp27b1, which encodes the 25-hydroxyvitamin D-1alpha-hydroxylase [1alpha(OH)ase(-/-) mice], lack 1,25-dihydroxyvitamin D [1,25(OH)(2)D] and have hypocalcemia and high parathyroid hormone (PTH) secretion. 25-dihydroxyvitamin d 114-135 cytochrome P450, family 27, subfamily b, polypeptide 1 Mus musculus 14-21