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. 1999 Apr 13;96(8):4390–4395. doi: 10.1073/pnas.96.8.4390

Figure 3.

Figure 3

(A) Loss of the PSW phenotype on reintroduction of the missing RRN9 into an rrn9Δ PSW strain. Plasmid pNOY446 carrying RRN9 (and URA3) or control URA3 plasmid pRS316 was introduced into NOY852 (rrn9Δ, PSW) by transformation. Four of the transformants isolated as Ura+ from each transformation were streaked on YEPD medium and then streaked on SD with and without 5-FOA (1 mg/ml). The plates were incubated at 30°C for 4 days. (B) A summary of experiments showing reversible switching between the non-PSW and PSW states.