3823
Moreover , at the mRNA level , long - time exposure ( >= 72 h ) to simulated microgravity induced a contractile phenotype tendency by up - regulating smMHC expression .
 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