Fig. 9

Anatomy of the hood stage of Micrura sp. “dark.” a-b are confocal projections of specimens stained with phalloidin (white) and propidium iodide (orange). Sagittal sections, apical plate (ap) up, juvenile anterior left. a. A 1.95 μm slab showing the proboscis (pb), the larval pore (pr) associated with the larval cirrus (lc), the ventral commissure (vc) and the lumen of the gut (gt). b. A 1.3 μm slab showing cerebral organ (co) opening laterally through the juvenile epidermis, the apical muscle (am) and the lumen of the gut. c. A diagram summarizing a-b (outline of the gut omitted for clarity). d. A diagram of the same stage from a frontal view. Scale bars 50 μm