9445
These conjugates showed remarkable enhancement in avidity in the cell wall models tested , including the vancomycin - resistant model , which had an increase in avidity of four to five orders of magnitude greater than free vancomycin .
 vancomycin, vancomycin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 vancomycin, vancomycin