Fig. 2From: Molecular characterization of Cryptosporidium spp. and Giardia duodenalis from yaks in the central western region of ChinaDendrograms of Giardia duodenalis based on nucleotide sequences of the triosephosphate isomerase (tpi) (a) and glutamate dehydrogenase (gdh) (b) gene. Trees were constructed using the neighbor-joining method based on genetic distance calculated by the Kimura 2-parameter model, implemented in MEGA version 5.2. Bootstrap values > 50 % from 1,000 replicates are shown on nodes. Sequences from this study are marked by filled trianglesBack to article page