Anticoagulant activity of crude extract (CE) and fractions from Jatropha gossypiifolia on aPTT test. CE: crude extract. CH2Cl2: dichloromethane fraction. AcOEt: ethyl acetate fraction. BuOH: n-butanol fraction. RA: residual aqueous fraction. Values expressed as mean ± SEM with n = 3. CE, AcOEt, BuOH and RA, in all concentrations tested, presented p < 0.05 when compared to control (absence of sample) by Tukey’s test (ANOVA).