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Shmooing of S. cerevisiae in response to the synthetic pheromone PHE1 and to S. cerevisiae α-factor. MATa Δste2 sst2-1 cells expressing the S. macrospora pre2 gene were treated for 0, 2, or 4 h with either synthetic pheromone PHE1 at 5 μM or dimethyl sulfoxide. As a control, a MATa sst2-1 strain was treated with synthetic α-factor or with dimethyl sulfoxide. Bar, 10 μm.
