This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Virulence factor helpful for entamoeba histolytica to adhere to intestinal mucosa is 
Select and explain. 
A. Lectin, B. Cystein protease, C. Amoebopore, D. Neuraminidase
A: Lectin
Answer: A: Lectin 
Explanation: Amoebic Lectin antigen helps in adhesion.