Figure 6. Lineage Tracing of noggin-Injected Blastomeres Ventralized embryos (32~cell stage) were coinjected with 25 pg of noggin and 0.5 ng of 5-galactosidase RNAs. The embryos were then stained with X-gal at about stage 25. Diffuse background staining can be seen in the endoderm. Specific staining from injected f3-galactosidase RNA can be seen as darker and more discrete points of staining. Arrows indicate cement glands. Arrowheads indicate staining of lineage tracer.
Image published in: Smith WC and Harland RM (1992)
Copyright © 1992. Image reproduced with permission of the Publisher, Elsevier B. V.
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