Step 1.1 Identifying Exposure Pathway Categories
Examples
To view examples of the three pathway categories see the map below.
![diagram identifying exposure pathway categories](/training/pha_professional2/html/module2/images/identifyingPathways.jpg)
Page last reviewed: May 31, 2016
Content source: Agency for Toxic Substances and Disease Registry
To view examples of the three pathway categories see the map below.