Assertion: prion's infectivity | /r/HasProperty | supplementary fig. s1
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text: The kinetic instability of the [psi-] state helps explain the high efficiency of transmission of [PSI+] because, as we confirm by examining the concentration dependence of the efficiency of prion infectivity (Supplementary Fig. S1), introduction of a single prion particle can convert [psi-] yeast into [PSI+].