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Fig. 3 The FRet 8 Antibody Labels a Ladder-like Array of Axons in a Horizontal Section through the Hindbrain and Midbrain at 48 h.
Labeled commissures cross near the segment borders (arrow-heads). The commissures are out of the plane of section where they cross the midline rostral (to the top) to Mi3. Many (seven or more) discrete longitudinal fiber pathways are visible bilaterally in the Ro2-Mi2 segments. There is a similar number of longitudinal fascicles in the midbrain (mbr) near the nucleus of the medial longitudinal fascicle (nuc mlf). Faintly labeled lateral clusters of neurons (asterisks) are visible between the Mi1 and Mi2 segments. The posterior lateral line ganglion (pllg) is caudal to the Ca1 segment.
Scale bar: 50 μm.