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Figure 3 | BMC Developmental Biology

Figure 3

From: Hamster oocyte membrane potential and ion permeability vary with preantral cumulus cell attachment and developmental stage

Figure 3

Equation for calculation of P Na /P K . The GHK can rearranged to give the above linear form, with the assumptions given in the text (A). Where P = PNa/PK, M is the total cation concentration outside the membrane (Na+ and K+). When the left term from equation A is plotted against the test (K+) cation concentration, equation A is simplified to equation B. Where b is the slope. B can then be rewritten as C where a is the intercept.

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