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While the relative safety of weak C activator liposomes remains to be confirmed in vivo , the unique , non - charge and non - antibody - mediated direct conversion of C3 by CHOL - PEG2000 liposomes ( although argues against the clinical development of these vesicles ) opens new opportunities to understand liposomal C activation at the molecular level .
 Chemical: CHOL - PEG2000
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: CHOL - PEG2000