Kaplan-Meier graph showing survival of mice pretreated with saline (n=11) or 20 mg/kg PAMAM G-3 (n=12) followed by injection of intravenous collagen/epinephrine to induce pulmonary embolism.Adapted from Jain S et al. Proc Natl Acad Sci USA. 2012;109:12938-12943.