Figure 1.

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
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