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Fig. 3 | BMC Zoology

Fig. 3

From: Microscopic Observations on Form and Structure of the Worm Enchytraeus buchholzi (Clitellata: Enchytraeidae)

Fig. 3

Structure of prostomium, I, II and III (all std-in-HE). A. Prostomium, I, II and III, lateral view. B. Brain, showing bifurcation in its front part, dorsal view. C. Brain, showing round-shape in its posterior margin, dorsal view. D. Prostomium, I and II, longitudinal section, lateral view. E. Segment I, transversal section, anterior view. ac: anucleate coelomic corpuscle; ann, annulus; bc, buccal cavity; br, brain; bw, body wall; cpc, circumpharyngeal connective; crn, cranial nerve; dv, dorsal vessel; epc, epithelial cell; esc, epithelial sensory cell; isf, intersegmental furrow; lv, lateral vessel; mo, mouth; mu, muscle; per, peristomium; php, pharyngeal pad; pro, prostomium; rm, retractor muscle; spg, subpharyngeal ganglion; sub, sinus underneath the brain; vcs, ventral chaetal sac; vnc, ventral nerve cord

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