Figure 4From: Perforin evolved from a gene duplication of MPEG1, followed by a complex pattern of gene gain and loss within EuteleostomiPerforin gene distribution in Chordata . The phylogenetic tree shows the relationship between the species. The numbers of genes per species is shown on the right, in the format: (# full length genes, # partial genes, # pseudogenes) # total genes. Line colour reflects total gene number as per the key.Back to article page