Fig. 2

Dendrograms 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 triangles