micropuncture of domes formed on plastic supports under standard culture conditions revealed electrical polarity similar to that of filter-grown cells ( 0.8 +/- 0.2 mv , serosal side positive ) combined with a highly negative cytoplasm ( -57 +/- 1 mv ) and very marked cell asymmetry ( 76 % of total electrical cell resistance was located in the mucosal membrane ) .
C0010834
cytoplasm
C0007634
cell