NJ tree of alignments of complete CDS of all known mouse and rat PSGs. Sequences of PSG40 – PSG43 are de novo predictions. Data were bootstrapped 1000 times and all major branches yielded values of 95–100%. The scale bar represents 0.1 nucleotide substitutions per site.
McLellan et al. BMC Evolutionary Biology 2005 5:39 doi:10.1186/1471-2148-5-39