Abstract
Analyses of nucleic acids from planarians removed at various stages of conditioning showed that the RNA/DNA specific activity ratios were significantly different in trained animals during the middle stages of training when learning was not pronounced. The ratios were, however, similar at the terminal stage when the conditioned response performance was high.
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CORNING, W., FREED, S. Planarian Behaviour and Biochemistry. Nature 219, 1227–1229 (1968). https://doi.org/10.1038/2191227a0
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DOI: https://doi.org/10.1038/2191227a0
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