Figure 4From: Molecular phylogeny of the antiangiogenic and neurotrophic serpin, pigment epithelium derived factor in vertebratesPEDF gene structure. Exon-intron arrangements of the PEDF gene in human, mouse, chick and fugu. The PEDF gene in each species consists of 8 exons and 7 introns. The considerable overall size difference of the PEDF gene among the species is almost entirely due to the variation in intron size. Black box shows exons and line shows introns.Back to article page