TABLE 1.

Genotypic heterogeneity of S. oralis strains isolated from interproximal plaque using MSA and aciduric media (MPN) of 15 adult subjects

Subject	Medium	No. of isolates	Subject-specific S. oralis genotype no.a
			1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1	MSA	15	14	1
	MPN	15	10		2	1	1	1
2	MSA	15	6	1	5	2	1
	MPN	5						1	1	1	1	1
3	MSA	15	8	2	1	1	1	1	1
	MPN	15								14	1
4	MSA	15	15
	MPN	15		10	2	1	1	1
5	MSA	14	8	2	1	1	1	1
	MPN	3							1	1	1
6	MSA	16	4	1	1	1	1	1	1	1	2	1	1	1
	MPN	20													15	4	1
7	MSA	15	6	2	2	1	1	1	1	1
	MPN	7	2								1	1	1	2
8	MSA	10	10
	MPN	11		4	6	1
9	MSA	10	7	2	1
	MPN	9	6			1	1	1
10	MSA	5	1	1	1	1	1
	MPN	11						2	6	1	1	1
11	MSA	20	20
	MPN	20	19	1
12	MSA	17	8	2	2	1	1	1	1	1
	MPN	16								10	4	1	1
13	MSA	13	5	3	2	1	1	1
	MPN	16							3	2	11
14	MSA	12	10	2
	MPN	10			4	2	2	1	1
15	MSA	11	5	2	2	1	1
	MPN	6						1	1	1	1	1	1

^aNumbers in boldface indicate strains of the same genotype recovered from acidic media and MSA from each subject.