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Fig. 7. Propidium iodide stained sagittal sections through trunk muscles of larval
zebrafish, aged 16 (A,B), 18 (C,D), 24 (E,F) and 72 h.p.f. (G,H). For each
stage, two sections are shown, one close to the medial plane and one at a more
lateral position. Hs, horizontal septum; m, myoseptum; nc, notochord; nt,
neural tube. Horizontal scale bars, 20 µm.