Figure 1From: HPD: an online integrated human pathway database enabling systems biology studiesPathway scale distributions for HPD molecular entity data and molecular event data. A pathway scale refers to the number of molecular entities or molecular events involved in a given pathway. The frequency on the y-axis refers to the count of all pathways falling in the category of a particular pathway scale size on the x-axis. (a) Distributions of pathway scale by counting molecular entities. (b) Distributions of pathway scale by counting molecular events.Back to article page