Fig. S1 The igf1ra and igf1rb receptor subtypes are ubiquitously expressed in zebrafish embryos. (A–D) Whole-mount mRNA in situ hybridization for igf1ra (A, C) and igf1rb (B, D). Panels C and D present high magnification (400×) images of the respective genital ridge regions (indicted with boxes in panels A and B). Genital ridge boundaries are denoted by the dashed lines. (E–F) Primordial germ cells (PGCs) in genital ridges of the respective embryos, identified by whole-mount fluorescence immunohistochemistry with Vasa antibody. Panels G and H present merged images of C–E and D–F, respectively. Both receptor subtypes are expressed uniformly throughout the embryos, including the PGCs and genital ridges.
Reprinted from Developmental Biology, 305(1), Schlueter, P.J., Sang, X., Duan, C., and Wood, A.W., Insulin-like growth factor receptor 1b is required for zebrafish primordial germ cell migration and survival, 377-387, Copyright (2007) with permission from Elsevier. Full text @ Dev. Biol.