Table 3.

Relative potencies of rabbit pre-DbpA297 and OspAB31 antisera for passive protection of C3H mice from challenge with B. burgdorferi B31

Antiserum (0.1-ml dose)Day(s) of antiserum administrationNo. of mice infected for serum dilution of:ED50
None (undiluted)1:51:251:125
Pre-DbpA29700/31/32/33/31:11.2
0, 20/30/30/32/31:83.1
OspAB3100/31/33/3 NDa1:7.5
0, 20/31/33/3ND 1:7.5
  • a ND, not determined.