(A): Time required for occlusion of cremaster arterioles in RhoG +/+ and RhoG -/- mice was measured using microvascular thrombosis model with light/dye-induced injury. 5 mice of each genotype were used, and statistical analysis revealed a significant difference between the 2 genotypes of mice (*, P < .01). (B) Representative images of cremaster arterioles were taken from RhoG +/+ and RhoG -/- mice 30 min after the injury. As seen with the outline (arrows) of the thrombus formed, thrombus formation was inhibited in RhoG -/- mice.