2804
Rodent liver cancer endpoints were linked to well - documented pathways such as peroxisome proliferator - activated receptor signaling and TP53 and novel targets such as PDE5A and PLAUR .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None