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Table 1 Allelic diversity among B. abortus VNTR loci

From: Evaluation of the HOOF-Print assay for typing Brucella abortus strains isolated from cattle in the United States: results with four performance criteria

 

No. of Alleles

Range of Repeats

Discrimination Indexa

Biovar 1 strains

   

Locus-1

14

2 – 14, Mc

0.90

Locus-2

4

3 – 6

0.66

Locus-3

9

3 – 16

0.78

Locus-4

7

2 – 10

0.77

Locus-5

2

2 – 3

0.07

Locus-6

3

2 – 3, M

0.17

Locus-7

12

3 – 14

0.87

Locus-8

1

2

0.00

Biovar 2 strains

   

Locus-1

8

2 – 10

0.80

Locus-2

5

3 – 7

0.71

Locus-3

8

2 – 13

0.86

Locus-4

6

2 – 7

0.78

Locus-5

2

2 – 5

0.14

Locus-6

4

2 – 4, M

0.39

Locus-7

12

3 – 15

0.93

Locus-8

1

2

0.00

Biovar 4 strains

   

Locus-1

10

2 – 12

0.92

Locus-2

2

4 – 5

0.53

Locus-3

5

1 – 6

0.74

Locus-4

5

2 – 6

0.77

Locus-5

1

2

0.00

Locus-6

2

2, M

0.43

Locus-7

9

3 – 12

0.90

Locus-8

1

2

0.00

All strains b

   

Locus-1

14

2 – 14, M

0.87

Locus-2

5

3 – 7

0.67

Locus-3

11

1 – 16

0.82

Locus-4

7

2 – 13

0.78

Locus-5

3

2 – 5

0.04

Locus-6

5

2 – 5, M

0.40

Locus-7

13

3 – 15

0.89

Locus-8

1

2

0.00

  1. a-The Discrimination Index was calculated for each locus by the method of Hunter and Gaston as described in the Materials and methods section; b -These numbers were calculated from the entire 103-sample test population. c – "M" indicates an atypical (mutant) allele.