The Simpson’s diversity index was 0.9790. The main characteristics of the 14 loci in 214 Y. pestis selleck chemicals strains were shown in Table 3. Nei’s diversity indices of the 14 loci were between 0.02 and 0.76. Locus M54 had higher Nei’s diversity index than others. The numbers of alleles of the

14 loci were between 2 and 7. Loci M54, M58 and M61 had the largest number of alleles (n = 7). pestis strains Locus No of alleles Copy number MI-503 mw of repeat sequences Amplied segment size range Nei’s diversity index M76 2 1-2 352-393 0.25 M73 3 1-3 319-379 0.02 M72 3 1-3 350-394 0.46 M66 4 2-5 375-435 0.37 M61 7 2-6,8,10 302-374,410,446 0.59 ms01 5 4,6-9 156,192-246 0.33 M59 4 6-9 262-313 0.43 M58 7 3-9 327-429 0.65 M55 2 2,3 395,411 0.18 M54 7 2-7,14 293-373,485 0.76 M52 2 3,4 187,202 0.2 M51 3 2-4 262-292 0.37 Nutlin-3 concentration M49 4

2-5 291-333 0.35 M37 5 3-7 299-339 0.37 Table 4 Number of alleles found among strains from different plague foci in 14 VNTR loci Locus   M76 M73 M72 M66 M61 ms01 M59 M58 M55 M54 M52 M51 M49 M37 A(11)   1 1 1 1 1 2 1 2 1 3 1 1 1 1 B(38) B2(12) 1 1 1 1 2 2 2 2 2 2 1 1 1 1   B3(20) 1 1 2 2 3 1 2 2 1 3 1 1

1 1   B4(6) 1 1 2 1 2 1 1 2 1 2 1 1 1 1 C(38)   2 1 3 2 4 2 2 6 2 2 1 3 3 3 D(20)   1 1 2 1 1 2 1 5 2 4 1 2 3 3 E(12)   1 2 1 2 1 2 2 1 1 1 2 1 2 2 F(22)   1 1 1 2 1 2 2 3 2 2 2 1 1 3 G(13)   2 1 2 1 2 1 3 2 1 3 1 2 1 3 H(10)   2 2 2 1 1 1 1 5 2 3 1 3 2 3 I(8)   2 1 2 1 2 1 2 3 1 2 2 1 1 3 J(9)   1 1 2 1 1 1 1 2 2 3 1 2 1 1 K(8) K1(6) 1 1 2 1 2 1 1 2 1 2 1 2 2 1   K2(2) 1 1 1 1 2 1 1 2 1 1 1 1 2 1 MTMR9 L(9)   1 1 1 1 2 1 1 2 1 1 1 1 2 1 M(10)   2 1 2 2 2 2 2 2 1 2 1 2 2 1 P(5)   1 1 1 1 1 1 1 1 1 1 1 1 1 1 Figure 1 MLVA genotyping data and cluster analysis.