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Dependence of the protoplast shrinking response to continuous blue light on Cl− and K+ of the bathing medium. The wild-type protoplasts, washed with and suspended in the following modified incubation media, were stimulated with blue light (70 μmol m−2 s−1) from time 0. A, Cl− in the medium was replaced by IDA. B, K+ in the medium was replaced by TEA+. The means ± se from 21 to 23 protoplasts are shown. Other details are as described in Figures 5 and 8.
