title: Adaptive response of humans to changes in dietary calcium: relationship between vitamin D regulated intestinal function and serum 1,25-dihydroxyvitamin D levels.
mesh_terms: D000328:Adult; D000368:Aged; D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D001706:Biopsy; D002117:Calcitriol / Q000097:blood*; D002118:Calcium / Q000378:metabolism; D002136:Calcium, Dietary / Q000008:administration & dosage*; D002645:Chickens; D004386:Duodenum / Q000201:enzymology / Q000473:pathology; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000378:metabolism; D007413:Intestinal Mucosa / Q000378:metabolism*; D007583:Jejunum / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000378:metabolism; D010710:Phosphates / Q000378:metabolism; D014807:Vitamin D / Q000378:metabolism*
chemical_list: D002136:Calcium, Dietary; D010710:Phosphates; D014807:Vitamin D; D000469:Alkaline Phosphatase; D002117:Calcitriol; D002118:Calcium