2091
In addition , passive transfer of MuSK - IgG to mice reduced the size and density of ColQ to ~ 10 % of controls and had a lesser effect on the sizes and densities of AChR and MuSK .
 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