CD14 and infection: By 21 days post-infection the mean IFU of 11 remaining culture-positive mice out 18 in the CD14-/- group (2.6 × 103 +/- 7.9 × 103) and 16 remaining culture-positive mice out of 18 in the C57BL/6J wt group (7.3 × 103 +/- 1.1 × 104) was only 65% different.