14764
S162T , T230N and T368A mutations enhanced serum resistance , and additionally K66T , T368A and E380K substitutions increased the thermostability of VSV - G pseudotyped retroviral vectors , an advantageous byproduct of the selection strategy .
 None
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