2107
The thrombolytic effects of native tissue - type plasminogen activator ( AK - 124 ) on experimental canine coronary thrombosis .
 tissue - type plasminogen activator, AK - 124
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 tissue - type plasminogen activator, AK - 124