18550
Of the methods that give stable complexes three are based on random lysine modification of mAbs and two on site - specific engineering .
 Chemical: lysine
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: lysine 
Answer:
 Chemical: lysine