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Fig. 1 | Frontiers in Zoology

Fig. 1

From: Immunohistochemical and ultrastructural properties of the larval ciliary band-associated strand in the sea urchin Hemicentrotus pulcherrimus

Fig. 1

The multicellular strand of the larval arms co-expresses glutamate decarboxylase (GAD) and the 5HT receptor (5HThpr). a The oral ectoderm and the aboral ectoderm are bordered by a multicellular strand that expresses GAD (green) and 5HThpr (red) in the 6-arm pluteus. ala, anterolateral arms; arrow, tip of arm; l-pda, left posterodorsal arm; l-, r-poa, left- and right-postoral arms; Mo, mouth. b Fifteen μm thick optical section of the part of the arm indicated by the dotted box in (a) shows GAD and nuclei. Apparent smeared green on the larval surface reflects blastocoelar GAD cells. c Same area as (b) shows 5HThpr and nuclei. d Merged image between (b) and (c) shows GAD and 5HThpr expression in the same place as (b, c). Arrows, perikarya regions

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