13973
Study showed that TD1 - hEGF not only had the similar bioactivity with native hEGF , but also possessed considerable higher transdermal ability than hEGF and a co - administration of TD1 and hEGF .
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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