Which of the following is a parasite protozoan
Entamoeba histolytica
Paramecium cardatum
Euglena viridis
Ascaris lumbricoides
The poisonous substance released as a result of ruputring of schizont in $ R.B.Cs. $ of malarial patient is
Entamoeba histolytica infection occurs through
Main source of amoebic dysentery is