| |
Fig. 1. In situ hybridisation of PDGF A and PDGFRa mRNA during the gastrula stages of development. Serial sections of gastrula staged
embryos were probed with 35S-labelled antisense PDGF-A and PDGFR-a cRNA probes. PDGF A is expressed in the presumptive ectoderm
(A,C,E) and PDGFR-a is expressed in the presumptive mesoderm (B,D,F). (A,B) Sagittal sections through the dorsal midline of a stage 10.25
embryo. (C,D) Parasagittal and (E,F) horizontal sections through a stage 12 embryo. An, animal pole; Vg vegetal pole; D, dorsal; V ventral; A,
anterior; P, posterior; bl. blastocoel; a, archenteron. Scale bar, 100 mm. |
