Fig. 2From: Frequent birth-and-death events throughout perforin-1 evolutionEvolution of mammalian, non-avian-reptile and amphibian perforin-1 loci. Left, phylogenetic relationship between selected species. Right, main PRF1 loci. Perforin-1 is depicted to scale with intron/exon junctions. Other genes are shown as blocks and may be cropped for ease of presentationBack to article page