Phylogenetic analysis.

<p>18S rRNA sequences from the respective <i>Cryptosporidium</i> isolates identified were compared phylogenetically using the MEGA 4.1 software. The phylogenetic tree obtained demonstrates the genetic diversity of the <i>Cryptosporidium</i> genotype II isolates identified from stool samples from Shanghai (SH1–10) and Shaoxing (SX11–16). Analysis was based on the nested-PCR of the18S rRNA locus sequence using the tree method of Neighbor Joining.