26749
Pharmacological Inhibition of Platelet - tumor Cell Cross - talk Prevents Platelet - induced Overexpression of Cyclooxygenase - 2 in HT29 Human Colon Carcinoma Cells .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None