2755
The present work highlights some of the most relevant contributions in the study of venom PLA ( 2 ) s , including the personal accounts of the authors of these studies .
 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