title: Parathyroid hormone secretion and 25-hydroxyvitamin D levels in primary osteoporosis.
mesh_terms: D002352:Carrier Proteins / Q000097:blood; D006801:Humans; D006887:Hydroxycholecalciferols / Q000097:blood*; D010024:Osteoporosis / Q000097:blood*; D010281:Parathyroid Hormone / Q000097:blood*; D011863:Radioimmunoassay; D011869:Radioligand Assay
chemical_list: D002352:Carrier Proteins; D006887:Hydroxycholecalciferols; D010281:Parathyroid Hormone