Explanation

$Entamoeba\ histokytica$is a microscopic endoparasite of man. It is commonly found in the upper part of large intestine and is very often lodged in liver, lungs, brain and testes. It invades the mucosa and submucosa of the intestinal wall and causes amoebic dysentery or amoebiasis. Infection depends upon intake of food or water contaminated with faecal matter. Houseflies sitting on faecal matter of hosts containing cysts may transfer them to food stuff.