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Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: Detailed reconstruction of the nervous and muscular system of Lobatocerebridae with an evaluation of its annelid affinity

Fig. 2

Muscular architecture in Lobatocerebrum riegeri n. sp. as seen with CLSM. Musculature (actin-filaments) in green, DAPI in purple, acetylated alpha-tubulin in yellow. a, d, g and h) Maximum intensity projections of a juvenile specimen, b, c, e, f and i) Maximum intensity projections of adult specimens. If not indicated otherwise, anterior is to the left and dorsal is up. a Lateral view of the body wall and digestive system musculature in pharyngeal area with sphincters, b Lateral view of the body wall musculature in the median region (between the male gonopore and the female ovary), c Lateral view of the body wall and digestive system musculature in the posterior tip of the animal, d Lateral view of the musculature in the anterior tip, e Lateral view of the anterior region of the body wall musculature in a virtually cropped image stack, revealing the brain supporting musculature, f Virtual view from inside of the animal towards the anterior tip posterior to the anterior portion of the brain supporting muscles, g Virtually cropped view of an anterior tip with star-shaped muscles, h Virtual transverse section through the pharynx with sphincters 1–4, i Virtual transverse section at the level of sphincter 5. Abbreviations: amf: anterior point of muscle fusion, bsm: brain supporting muscle, cmds: circular muscle of the digestive system, dllm: dorsolateral longitudinal muscle, dlm: dorsal longitudinal muscle, lca: major caudal lobe, llm: lateral longitudinal muscle, lmds: longitudinal muscle of the digestive system, lr: rostral lobe, np: neuropil, pfg: posterior frontal gland, ph: pharynx, sph1–6: sphincter 1–6, ssm: star-shaped muscle, tmr: transverse muscle ring complex, vllm: ventrolateral longitudinal muscle, vlm: ventral longitudinal muscle

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