TY - RPRT TI - A SIMPLE TUBE-PUNCTURING DEVICE FOR USE WITH DENSITY GRADIENT CENTRIFUGATION. AU - T SALO PY - 1965 DO - 10.1016/0003-2697(65)90274-5 UR - https://pubmed.ncbi.nlm.nih.gov/14302460/ ID - 14302460 ER -