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Scanning electron microscopy of XLerk-expressing embryos during the early blastula stage of development. 2-Cell stage embryos were injected with 2.5 ng of capped XLerk, XLerk1–308, or XLerk1–288 mRNA in each blastomere. Embryos were then fixed at stage 8 in 4% formaldehyde/1.25% glutaraldehyde and prepared for SEM.
