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. 2002 Dec 20;547(Pt 1):209–219. doi: 10.1113/jphysiol.2002.029660

Figure 1. Macroscopic changes induced by hypertonic shock in Xenopus oocytes.

Figure 1

A, reduction in cell volume (%) in 6 oocytes. B, example of ATP release measured in a single oocyte by means of the luciferin-luciferase reaction. This oocyte was not penetrated with fine-tipped electrodes. The trace corresponds to changes in light intensity, reflecting the presence of ATP in the medium. Just at the beginning of the recording, a known dose of ATP (0.6 pmol) was added to evaluate the amount of ATP released by the oocyte.