TABLE 3.

Nucleotide differences at the 5′ end of the 16S rRNA genes of 11 equine and one snail E. risticii strains

DNA source	Nucleotide at the following positiona:
	40	76	77	90	92	94	97	105	131	142	189	229	281	297	309	319	336	347	365	382	515	541
E. risticii Illinois	G	G	G	C	T	G	C	G	G	G	G	G	G	A	A	G	G	T	A	C	G	G
Dr Pepperb	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Ms Annieb	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Thorenbergc	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Dannyc	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	A	.
Tatec	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	A
Mostly Memoriesd	.	.	.	.	.	.	.	.	.	.	A	.	.	.	.	.	.	C	G	.	.	.
E. risticii Kentucky	.	.	.	.	.	.	A	.	A	.	.	.	.	.	.	.	.	.	.	.	.	.
Docb	.	A	.	.	.	A	A	.	A	.	.	.	.	.	.	.	.	.	.	.	.	.
E. risticii Ohio 081	.	A	A	T	C	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Buckc	.	A	A	T	C	.	.	.	.	.	.	.	.	G	.	.	.	.	.	.	.	.
Klamath Falls snailc	.	A	A	T	C	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.

^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 527 bp (positions 36 through 563). Position numbers refer to positions in the 16S rRNA gene of the type strain E. risticii Illinois. 

^bSources of strains from California. 

^cSources of strains from Oregon. 

^dSource of strain from Michigan.