FIG. 1.

DNA sequence diversities among C. parvum isolates in the Cpgp40/15 gene. The genes from 16 isolates were sequenced and tentatively grouped into seven types that are indicated on the left as IIa, IIb, IIc, Ia1, Ia2, Ib, and Ie (for the isolate names, see Materials and Methods). Dots indicate identical base pairs, and hyphens indicate gaps. The differences between IIa and IIb and between Ia1 and Ia2 are indicated by shading. The GenBank accession numbers are AY167589 (CKJ7), AY167590 (CI2), AY167591 (GI1), AY167594 (HJ3), AY167595 (HN6), AY167596 (HI2), and AY167593 (HJ2).