9650
A single N - glycosylation site present in chicken gp42 is conserved among all five of these proteins : carbohydrate analysis of gp42 revealed the presence of a complex type glycan chain at this site .
 chicken gp42, gp42
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 chicken gp42, gp42