
Keywords: خالص; ColA1; α1 (I) procollagen locus; puro; Puromycin N-acetyl-transferase gene; hygro; hygromycin resistance gene; HR; homologous recombination; SCNT; somatic cell nuclear transfer; DT-A; diphtheria toxin A gene; CMV; cytomegalovirus; EGFP; enhanced green fl