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Fig. 1 Expression pattern of csrnp1a in zebrafish embryonic development.
Early embryos show a ubiquitous signal of csrnp1a (A to D). Latter Stages (E to L) show an extensive anterior expression in the head region (black arrow) and a caudal, much localized expression, at the intermediate cell mass (ICM) (red arrow) (all are lateral views; A to C animal pole to the top; D to L anterior to the left). (F, H, J, L) Magnifications showing the expression of csrnp1a at ICM. Note the dynamic extension and retraction of its expression. (M) csrnp1a RT-PCR; the numbers above the gel correspond to developmental stages (as hpf).