Abstract
Mutant frequencies in male germ cells were determined in mice 3 days after exposure to saline, methylmethane sulfonate (MMS), or ethylnitrosourea (ENU). DNA was isolated from seminiferous tubules by a modified version of the drop dialysis method. A 5-fold increase in mutant frequency was observed in mice treated with ENU. No statistically significant increase was observed in mice treated with MMS.
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