highly significantP < 0.0001
Muscle colonies formed from Bcl-2 (−/−) cells contained an average ± SE of 112.6 ± 9.7 nuclei ( n = 178), whereas muscle colonies formed from wild-type cells contained an average ± SE of 202.8 ± 11.8 nuclei ( n = 274), a highly significant ( P < 0.0001) difference.