

Embryonic and adult expression of gdf7. Total RNA was isolated from zebrafish embryos at selected stages from 5 hpf to 120 hpf (A) and from adult tissues (B). The expression ofgdf7 was examined by RT-PCR and the amplified products were detected following hybridization of an internal radiolabeledgdf7-specific oligonucleotide. The expression ofβ-actin was examined as a positive control for cDNA synthesis. (Br) brain; (He) heart; (Li) liver; (Ki) kidney; (Gu) gut; (Mu) muscle; (Te) testis; (Ov) ovary.











