12190
However , some of these interactions are considered to be simply contributing to background ' noise ' and others are as ' crosstalk ' biologically - relevant to cellular physiology , leading to synergy effects more than additive responses in an entire organism .
 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