11515
Here , staphylokinase ( SAK ) , a thrombolysis agent for therapy of myocardial infarction , was mono - PEGylated at the C - terminus of SAK far from its bioactive domain .
 Chemical: C
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: C 
Answer:
 Chemical: C