Fig. 3.

SspI restriction enzyme recognition sequences (cleavage site indicated by ▾) in the nested PCR products of C. parvum. Dots indicate base pair matches. C. hominis, C. ubiquitum, and C. andersoni were aligned to C. parvum by using a ClustalW alignment. Base pair mismatches in sequences when C. ubiquitum or C. andersoni was aligned to C. parvum or C. hominis are indicated by letters or gaps (–). The locations of the restriction sites correspond to the base pair locations in C. parvum reported under GenBank accession number AF164102.