Click on image to view larger version.

Figure 1 Mean (± SEM) number of microbubbles retained within the cremasteric microcirculation of wild-type and C3-deficient (C3–/–) mice after injection of 3 x 10⁷ microbubbles. *p < 0.01 all other microbubbles in wild-type mice; p < 0.01 vs. MB_neg in wild-type mice. MB_neg = lipid microbubbles with a net negative charge; MB_neut = lipid microbubbles with a net neutral charge; PEG = polyetheleneglycol.