TY - RPRT TI - Native collagen fibrils from echinoderms are molecularly bipolar. AU - F A Thurmond AU - J A Trotter PY - 1994 DO - 10.1016/s0022-2836(05)80015-4 UR - https://pubmed.ncbi.nlm.nih.gov/8289266/ ID - 8289266 ER -