| Literature DB >> 14042995 |
Abstract
Electrical potential and resistance were measured with microelectrodes in in situ and isolated nuclei of gland cells of Drosophila flavorepleta. The nucleus-cytoplasm boundary was found to be rather impermeable to ion diffusion. It presents a resistance of the order of 1 ohm cm(2) and sustains a "resting" potential, the nucleoplasm being about 15 mv negative with respect to the cytoplasm. Both the resistance and potential appear to be associated with the nuclear membrane: the potential declines to zero and the resistance to a fraction of its original value, when the membrane is perforated experimentally.Keywords: CELL NUCLEUS; DROSOPHILA; ELECTROPHYSIOLOGY; IONS; PROTOPLASM; SALIVARY GLANDS
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Year: 1963 PMID: 14042995 PMCID: PMC2195317 DOI: 10.1085/jgp.46.6.1123
Source DB: PubMed Journal: J Gen Physiol ISSN: 0022-1295 Impact factor: 4.086