Fig. 3

Pachyzoon atlanticum. 3D reconstruction based on histological sections. a View of polypide with surrounding areas displayed as volume rendering. b Lateral view of polypide. c Anal view of polypide. Abbreviations: a – anus, app – apertural papilla, bbw – basal body wall, ca – cardia, cae – caecum, db – duplicature band, es – esophagus, fbw – frontal body wall, int – intestine, l – lophophore, ph – pharynx, py – pylorus, rm – retractor muscle