TY - RPRT TI - A neutral polypeptide--calcium ion complex. AU - D W Urry AU - W D Cunningham AU - T Onishi PY - 1973 DO - 10.1016/0005-2728(73)90035-2 UR - https://pubmed.ncbi.nlm.nih.gov/4705458/ ID - 4705458 ER -