Pathological changes in the central nervous system in adult npc2–/– zebrafish. (A) Luxol fast blue staining showed differences in myelination between wildtype and npc2–/– fish. (B) Changes in habenula structure were present in some npc2–/– fish, which lacked the characteristic structure of this part of the habenular tract. (C) Midbrain with vacuolization of the habenula tract (blue arrow) with fascicular retroflexus (blue arrowhead) and degenerative changes in the medial and lateral longitudinal fascicle. OB, olfactory bulb; OR, olfactory rosette; Te, telencephalon; TeO, tectum opticum; Ce, cerebellum; Me, medulla; PG, preglomerular complex; and PT, posterior tuberculum. (A) LFB staining. Scale bar = 500 μm. (B,C) H&E staining. Scale bar = 100 μm. (C) scale bar
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