Fig. 4
From: Unexpected co-linearity of Hox gene expression in an aculiferan mollusk
Acr-Hox1 expression pattern in Acanthochitona crinita. Anterior faces up. a, b Stereomicrographs and c light micrograph of mid-trochophore larvae showing the expression pattern of Acr-Hox1 next to the stomodaeum in the anterior hyposphere. d–f Autofluorescence (grey) of mid-trochophore larvae and specific transcription product distribution (yellow). d Single sagittal section and e, f ventral and ventro-lateral whole mount clipping plane projection showing the location of the Acr-Hox1 transcription products in the hyposphere. g, h Stereomicrographs and i light micrograph of the faint Acr-Hox1 expression pattern in late trochophores. ao apical organ, ds dorsal shell plates, f foot, mo mouth opening, pt prototroch, st stomatodaeum, trb trochoblast(s)