2792
The test for alpha - naphthyl esterase and quantitation of macrophages ( absolute number ) per infiltration area unit adjacent to the abscess suggest a direct correlation between the absolute number of macrophages and the width of the capsule .
 alpha - naphthyl esterase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 alpha - naphthyl esterase