Summary
Experiments were performed on guinea pigs, rabbits and kittens. It was established that the form and the structure of hair cells of the organ of Corti is changed depending on the condition of the animal (whether it is in condition of rest or stimulated by sound). The content and the distribution of RNA and DNA is changed correspondingly. Depending on the frequency of the sound stimuli the external hair cells in the cochlea become rounded, while their nuclei dilate or, shrink — “pulsate”. DNA occuples an external position on the internal surface of the nuclear membrane in the cells with the swollen nuclei. As to RNA — it disappears from the cytoplasm entirely.
Increased content of RNA in the nucleus, as well as in the cytoplasm, is found in the cells with shrunken nuclei.
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Vinnikov, I.A., Titova, L.K. Distribution of nucleic acids in the hair cells of the organ of corti of animals in relatively quiet surroundings, and exposed to sonic stimulation. Bull Exp Biol Med 45, 465–469 (1958). https://doi.org/10.1007/BF00781257
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DOI: https://doi.org/10.1007/BF00781257