TY - RPRT TI - Characteristics of HeLa strains: permanent vs. variable features. AU - W A Nelson-Rees AU - L Hunter AU - G J Darlington AU - S J O'Brien PY - 1980 DO - 10.1159/000131490 UR - https://pubmed.ncbi.nlm.nih.gov/7002488/ ID - 7002488 ER -