Fig. 13 Internal anatomical details of a branch and scanning microscopy images of stolons. A, B cLSM images of musculature and nervous system immunohistochemical stainings at a branching point, dashed-lined circles mark muscle bridges. C Male stolon. D Head of a male stolon. E Stolon parapodium, arrow points to paddle-like modified chaetae. F Regenerating pygidium, after detachment of stolon. G Male stolon detached. H Stolon attached to the stalk segments. I Posterior segments of male stolon, ventral view, arrows point to oval structures, at the base of parapodia. Scale bars: 250 µm A, B, H, I, 500 µm C, G, 100 µm D, F, and 50 µm E