Fig. 5From: PoSE: visualization of patterns of sequence evolution using PAML and MATLABdN/dS ratios estimated from different poliovirus data sets. Upper plot: Wild poliovirus (31 sequences) [2]. Middle: circulating vaccine-derived poliovirus (> 300 sequences) [3]. Lower plot: Immunodeficiency-related vaccine-derived polioviruses (8 sequences) [10]Back to article page