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Table 1 Spirochete burden in blood infected by different strains at different times post-infection (p.i.) a

From: Pathogenic analysis of Borrelia garinii strain SZ isolated from northeastern China

Time p.i

B31

SZ

BO23

Control

2 d

263

153

278

0

5 d

329

105

558

0

9 d

1260

160

1060

0

15 d

258

875

250

0

30 d

366

759

136

0

60 d

144

129

89

0

90 d

0

0

0

0

  1. a BALB/c mice were sacrificed at various time points after infection. The blood was tested for Borrelia by qPCR. The mean numbers of spirochetes per 106 mouse cells (calculated on the basis of β-actin standard curves) are given. days (d).