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J Dent Res 36(3): 361-371, 1957
© 1957 International and American Associations for Dental Research
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ANTIGENIC ANALYSIS OF STRAINS OF HETEROFERMENTATIVE LACTOBACILLI OF HUMAN ORAL ORIGIN

NED B. WILLIAMS 1 and EVA B. FRANCK 1

1 Department of Microbiology, University of Pennsylvania, School of Dentistry, Philadelphia, Pa.

1. An antigenic analysis using agglutination and agglutinin-adsorption tests of 5 strains of heterofermentative lactobacilli indicated the presence of 6 major antigens labeled II·2,3,4,5,6, and 7. Evidence was obtained for at least 2 minor antigens, m-1 and m-2.

2. Antigenic component IIb·3 was present in strains #9338, #90-2, and #126-2-1 in different amounts, accounting for differences in serologic reactions after adsorption of respective antisera.

3. A total of 15 of 29 strains of heterofermentative lactobacilli was agglutinated by 1 or more of the antisera containing monospecific antibodies.

4. Cross reactions between the strains under study and the antisera of homofermentative lactobacilli or strains of L. bifidus or L. parabifidus (heterofermenters) were observed only in unadsorbed antisera. No cross reactions were observed when antisera containing monospecific antibodies were employed.

Submitted on March 10, 1956






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