FIG. 1.

HN2 sensitivity of the rad52 strain (WXY9387) and its isogenic parent (DBY747) in the exponential and stationary growth phases. (A) Exponentially growing cells were treated with the stated doses for 1 h at 28°C. Appropriate dilutions giving around 200 colonies on untreated controls were spread on YEPD plates and incubated for 3 days. Also shown for reference are the results obtained with an isogenic rad14 disruptant. (B) As in panel A but using stationary-phase cells. All results are the means of at least three independent experiments, and the vertical error bars show the standard error of the mean.