TY - RPRT TI - Native collagen has a two-bonded structure. AU - R Y Yee AU - S W Englander AU - P H Von Hippel PY - 1974 DO - 10.1016/0022-2836(74)90420-3 UR - https://pubmed.ncbi.nlm.nih.gov/4817799/ ID - 4817799 ER -