Abstract
Using a new method of measuring the degree of aggregation of planaria under homogeneous light conditions, it has been possible to show that planaria do indeed aggregate under these conditions and to distinguish certain differences between species in the degree of aggregation.
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REYNIERSE, J., ELLIS, R. Aggregation Formation in Three Species of Planaria: Distance to Nearest Neighbour. Nature 214, 895–896 (1967). https://doi.org/10.1038/214895a0
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DOI: https://doi.org/10.1038/214895a0
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