Figure 2.

(a) An excerpt of 13 ingredient groups from the complete IAbN. Child-of links are shown as arrows. Removed ingredient groups (fewer than ten ingredients) have a red background. (b) The Aggregate IAbN (b=10) for (a). Aggregate ingredient groups are shown as rounded-corner white rectangles, labeled with the numbers of ingredients, drugs and groups they summarize. (I = Ingredients; D = Drugs; G = Groups that were removed). Regular ingredient groups are white rectangles. They have the same I and D value in (a) and in (b).