10833
Thrombin activation requires assembly of a prothrombinase complex of activated coagulation factors on an anionic phospholipid surface , classically provided by activated platelets .
 Thrombin, activated platelets, coagulation factors, prothrombinase complex
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 Thrombin, activated platelets, coagulation factors, prothrombinase complex