11283
Our data have demonstrated that the new gamma - CD - OEI - SS - FA gene carrier had low cytotoxicity and possessed capacity to target and deliver DNA to specific tumor cells that overexpress FRs , as well as functions to recover and recycle FRs onto cellular membranes to facilitate continuous FR - mediated endocytosis to achieve very high levels of gene expression .
 Chemical: gamma - CD - OEI - SS - FA
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: gamma - CD - OEI - SS - FA