Assertion: damselfly's eye | /r/HasAspect | blue and uv receptors
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Source sentences:
text: They are segregated in the compound eye so that the upwards facing eye has only blue and UV receptors, and the downwards facing eye has receptors for longer wavelengths, [such as] green and orange," says Robert Olberg, dragonfly vision expert and professor of biology at Union College in Schenectady.