TABLE 2.

Nucleotide differences in the 16S rRNA genes of six equine and three snail E. risticii strains

DNA source (reference)	Nucleotide at the following positiona:
	40	76	77	90	92	97	105	131	142	229	281	309	319	336	365	382	619	769	775	828	956	971	1221	1226	1230	1246
E. risticii Illinois	G	G	G	C	T	C	G	G	G	G	G	A	G	G	A	C	G	G	G	A	T	G	C	G	C	G
Eclipseb	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	T	.	.	.	.	.	.	.	A	.	.
E. risticii Ohio 081	.	A	A	T	C	.	.	.	.	.	.	.	.	.	.	.	T	.	.	.	C	A	T	.	T	A
E. risticii Kentucky	.	.	.	.	.	A	.	A	.	.	.	.	.	.	.	.	.	.	.	.	C	.	T	.	C	A
SRCc	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	C	.	T	.	T	A
Jugad	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	C	.	T	.	T	A
SHSN-1 (4)	.	.	.	.	.	.	.	.	.	.	.	G	.	.	.	.	.	.	.	.	C	.	T	.	T	A
SHSN-2 (4)	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	G	C	.	T	.	T	A
Bunne	A	.	.	.	.	.	C	.	A	T	C	.	C	T	T	.	.	A	A	.	C	.	T	.	T	A

^aDifferences in the nucleotide sequence are relative to the sequence of the type strain E. risticii Illinois (GenBank accession no. U21290); identical nucleotides are indicated by periods, and nucleotide differences are indicated by capital letters. The fragment length used for the alignment was 1,251 bp (positions 36 through 1287). Position numbers refer to positions in the 16S rRNA gene of the type strain E. risticii Illinois. 

^bSource of strain from Pennsylvania. 

^cSRC agent from California (19). 

^dUnderlining indicates snails. 

^eSource of strain from Oregon.