Fig. 6. The lateral mesoderm of the anterior trunk comprises an intermediate target of PGCs. (A,B) Fate-mapping of the somatic cells that surround the main PGC clusters at early somitogenesis. Cells that contain the uncaged fluorescein lineage tracer are labeled in red and PGCs in blue using nos1 as probe. (A) Flat-mount of an embryo at the six-somite stage, fixed immediately after the uncaging procedure. Note that the uncaged region includes the PGC cluster. (B) Lateral view of a deyolked embryo at 24 hpf. Note that the cells containing the lineage tracer (bracket) and the PGCs (arrow) have separated and that no labeled somatic cells are detectable in the region of the PGCs.
