Figure 2. Morphine potentiates bacterial burdens in organs and blood of two strains of mice.
Mice were implanted with either a morphine pellet or a placebo pellet 48 hours before i.p. infection. Panel A: C57BL/6 mice (0.1 LD50 dose, A. baumannii, strain 5798, 8.2 × 105 CFU) or Panel B: C3HeB/FeJ mice (0.2 LD50 dose, A. baumannii, strain 4502, 7.2 × 105 CFU). Organs and blood were harvested at 12 hours post-infection for necropsy. Points represent individual animals. Lines are median values for bacterial burdens. Symbols on the X-axis represent animals whose Acinetobacter burden was below the detectable limit of 30 CFU/0.1gram tissue or 1 CFU/0.1ml blood.