Optical measurements of intracellular pH in intact isolated muscle fibres and muscle growth cones in culture.


Intracellular pH (pHi) has been measured in intact muscle fibres isolated from the mouse flexor digitorum brevis muscle, using the fluorescence of dicyanohydroquinone as an indicator. The pHi in fibres cultured from 1 to 14 days ranged from 7.0 to 8.1. With time in culture, isolated fibres developed growth cone-like extensions from their ends. These… (More)


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