Opsin expression patterns across ommatidia in the eye of a female hairstreak butterfly, Eumaeus atala (Lepidoptera: Lycaenidae). (IMAGE)
Caption
The blue and long-wavelength red-shifted visual opsins are expressed across the eye but in distinct photoreceptor cells of single ommatidia, as shown here using double fluorescent in situ hybridization.
Credit
Image copyright 2021, Marjorie A. Liénard, Lund University.
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