
																
																	Comparison of the genetic effects of equimolar doses of ENU and MNU: While the chemicals differ dramatically in their mutagenicity in stem-cell spermatogonia, both elicit very high mutation rates in differentiating spermatogonia
																
																
																
															Keywords: جهش خاص لوس; Mouse; Mutagenesis; Specific-locus mutations; Germ-cell stage; Ethylnitrosourea (ENU); Methylnitrosourea (MNU); Spermatogonia