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. 1999 Jul 6;96(14):7658–7663. doi: 10.1073/pnas.96.14.7658

Figure 6.

Figure 6

Possible model for sensitization of the heat response. Acidification of the external solution causes protonation of an external site on the heat-sensitive ion channel and consequent sensitization (19). Phosphorylation at the internal surface has a similar effect (6). Both effects are reversible. PP, phosphatase.