part_of part of part of derives_from myoblast cell line cultured cell skeletal muscle myoblast Rattus norvegicus organism part rat cell line L-6 Kalpana Panneerselvam RRID:CVCL_0385 CLO:0007203 BTO:0002809 Rattus norvegicus skeletal muscle myoblast cell line. The L6 myogenic line was isolated from primary cultures of rat thigh muscle maintained for the first two passages in the presence of methyl cholanthrene.