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Figure 7 | Frontiers in Zoology

Figure 7

From: Evolution of clitellate phaosomes from rhabdomeric photoreceptor cells of polychaetes – a study in the leech Helobdella robusta (Annelida, Sedentaria, Clitellata)

Figure 7

H. robusta TX. Expression of opsin A in the brain region, anterior and posterior sucker. Whole mount in situ hybridizations of adult specimen stained with NBT/BCIP. A. Entire specimen showing a stronger signal in the posterior end. B. Close up of the anterior region showing that the signal is restricted to circularly arranged single cells. In each cell the signal is concentrated in the periphery.

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Frontiers in Zoology

ISSN: 1742-9994