PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12635872-3 2002 These opposing changes can be explained by the known enhanced absorption of Ca relative to Mg by the gut during lactation coupled with a Ca-induced suppression of PTH-driven renal Ca and Mg reabsorption. Magnesium 187-189 parathyroid hormone Capra hircus 163-166