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Complementary to mammalian models, the zebrafish system facilitates methods that are not possible (in vivo imaging of embryonic development), not practical (such as large-scale forward genetic screens), or not cost-effective (high-throughput chemical screens for drug discovery) in mice or rats. Zebrafish's exogenously fertilized embryos allow real-time, in vivo observation of development from the single-cell stage. Zebrafish Targeted Knockout zebrafish.creative-biogene.com/zebrafish-knockout-service.html
