Malmsten in 1857 from a patient who was suffered from dysentery stools

Bottom region called cytopharynx, it extend as sac like cavity

Posterior have small opening called cytopyge- anal opening

Cilia from mouth Region called Adoral cilia ( extend to cytopharynx)

Macronucleus - Bigger it resemble kidney bean shape

Micronucleus - small round shape , close by macronucleus

Present Side by side or sometime one above the other

Parasite take Bacteria, cell debris, fat, RBC cells, these are digest by food vacuole. Excrete through Anal opening (cytopage).

It have double layered cyst wall covering which is transparent.

Shrink the cilia , both nucleus and contractile vacuole

2. Excystation - single cyst gives rise to single tropozoite

First divide macronucleus then macronucleus, food vacuoles and contractile vacuole and form parasite mouth

4. Conjugation - parasite mouth joined together and transfer genetic material then separate

Affect human, recover within 3-4 days even without any treatment

Some cases, intestinal ulcers- it either specific round or irregular shape or pus filled structure

1% affect by lymph nodes called lymph adenopathy

Biopsy- pus & ulcer sample for analyze tropozoite form