Abstract
THE cuticle of adult Rhodnius (Hemiptera) is marked by mediolaterally oriented surface ripples. From transplantation and rotation experiments on the epidermis Locke1 demonstrated a segmentally reiterated gradient. We2 have proposed a model of the gradient which is considered as a concentration of some diffusible substance, the direction of steepest slope of concentration specifying cellular polarity and thereby the orientation of the ripples. We suggested that the cells might contribute to the stability of the gradient and attempt to maintain their original or ‘set’ level when transposed.
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References
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LAWRENCE, P. Cell movement during pattern regulation in Oncopeltus. Nature 248, 609–610 (1974). https://doi.org/10.1038/248609a0
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DOI: https://doi.org/10.1038/248609a0
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