Table 2. Mean lifespan of high Ty1 copy strains as a percentage of mean lifespan of the zero Ty1 copy strain for each medium or growth condition.

Medium/condition	Median lifespana	Maximum lifespanb
YPD	104	109
YPD + HU	122*	159**
YPD 30°	106	107
YPD 30° + HU	106	116**c
YPD + threonine	101	119
YPD + threonine + HU	122	137*
SC	123*	122*
SC + HU	103	106
YPD + 5 mM glutathione + HU	106	97.2
YPD + 10 mM glutathione + HU	99.5	93.7

*P < 0.05 vs. zero Ty1 copy strain; **P < 0.01 vs. zero Ty1 copy strain.

^aDays to 50% viability.

^bDays to 10% viability.

^cSignificantly reduced compared to high Ty1 copy strains in YPD + HU at 20° (P < 0.01).