Table 2.

Analysis of restriction-fragment length polymorphisms in P- and R-segments

Sizes (in kilobases) are given for the restriction fragments (enzymes listed across top) generated from genomic DNA of E. tenella strains Houghton (H), Weybridge (Wey), or Wisconsin (Wis), as detected by hybridization with probes to P- and R-segment sequences (named at left; Segment refers to the segment of chromosome 1 within which the probe is expected to hybridize). Polymorphisms (fragments that differ in size between the strains) are highlighted in bold. (NA) Not applicable; (ND) not determined. “Total P” and “Total R” refer to the total sizes of restriction fragments (as measured on the Houghton strain) hybridized by the probes used. Further details of the probes are given in the Supplemental Material.