16936
APP ( amyloid precursor protein ) is cleaved by meprin beta in vivo , reminiscent of the beta - secretase BACE1 ( beta - site APP - cleaving enzyme 1 ) .
 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