Overexpression of GTR2 on galactose-containing medium suppresses the toxic effect of group A compounds. The strains are described in Materials and Methods and are as follows: EHY47 with pRS316, EHY807 with pLZ43; EHY807 with pRS316, EHY361 with pLZ43, EHY361 with pRS316, EHY644 with pLZ43, EHY644 with pLZ44, and EHY644 with pRS316.