Vol. 154, No. 9 | 10.1085/jgp.202112994 | March 21, 2022
The initial version of Fig. A1 should not have included P3 and P7 data, and other data should have been merged. JGP regrets this error, which was introduced during the production process.
The corrected figure is shown here. The errors appear only in PDF versions downloaded on or before April 7, 2022.
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