Effect of cooked onion extracts on human platelet aggregation in vitro. Negative values are platelet inhibitory, the magnitude of the value reflects the amount of inhibition relative to a parallel control. Positive values are platelet stimulatory reflecting the percentage increase in platelet aggregation above a collagen-induced control cause by the addition of the extract.
Hansen et al. Nutrition Journal 2012 11:76 doi:10.1186/1475-2891-11-76