4338
The effect of the main gangliosides ( GM ( 1 ) , GM ( 3 ) , GD ( 3 ) ) and free sialic acid ( Neu5Ac ) upon the adhesion of pathogenic bacteria implicated in infant diarrhoea is assessed in vitro using the Caco - 2 cell line .
 Chemical: sialic acid; Chemical: Neu5Ac
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: sialic acid; Chemical: Neu5Ac