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Figure 5 | BMC Developmental Biology

Figure 5

From: Disruption of the folate pathway in zebrafish causes developmental defects

Figure 5

Methotrexate–treated embryos maintain expression of appropriate developmental markers. Expression patterns were visualized via whole-mount in situ hybridization in embryos treated with 400 μM MTX and fixed at shield stage (A-H), tailbud (I-P), and 24 hpf (Q-W’). While MTX-treated embryos at 24hpf are clearly delayed with respect to normal development, they do express appropriate developmental markers: krt18 –enveloping layer, gsc – involuting cells and neural plate, ntl – blastomere margin, notochord and dorsal organizer, foxA2 – involuting cells and neural plate, crestin – neural crest, myoD – paraxial mesoderm, hgg- hatching gland (anterior most structure), ngn – CNS. (A-J) Animal view, dorsal to the right. (K-P) Lateral view with dorsal view inset. (Q, R, R’, T, V, W, X, X’) Dorsal view. (S, U, V’) Lateral view. (T’) ventral view.

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