Entamoeba histolytica

Japanese: Entamoeba histolytica（英語表記）Entamoebahistolytica

...The slug amoeba Amoeba limax is small (0.03-0.04 mm) and elongated rod-like with a small protrusion at the rear end. The pathogenic dysentery amoeba Entamoeba histolytica parasitizes the human large intestine wall tissue and causes ulcers. It is usually small, 0.02-0.03 mm. ...

From [Dysentery]

...There is also a disease in children that is thought to be a Shigella infection called dysentery, but for more information on this, please see the entry for dysentery.
[Amoebic dysentery]
The pathogen is Entamoeba histolytica (a type of protozoan belonging to the root pods), whose mature cysts are ingested with food and drink, causing infection in humans. The vegetative form (20-30 μm in length) emerges from a spherical cyst (6-20 μm in diameter) in the small intestine, moves in an amoeba-like manner, invades the mucous membrane of the large intestine, forms ulcers, and produces bloody mucus in the stool.

From [Abscess]

…Depending on where the abscess develops, it is called a lung abscess, liver abscess, kidney abscess, or brain abscess. In addition to bacteria, abscesses in the liver, lungs, and brain can be caused by the protozoan amoeba Entamoeba histolytica . In addition, necrotic foci caused by inflammation of bones and joints due to tuberculosis bacteria can dissolve, forming lesions similar to those caused by pyogenic bacteria. …

*Some of the terminology that mentions "Entamoeba histolytica" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ナメクジアメーバAmoeba limaxは小型(0.03～0.04mm)で棒状にのび，後端には小さな突起がある。病原性の赤痢アメーバEntamoeba histolyticaは人間の大腸壁組織内に寄生して潰瘍を形成する。ふつう0.02～0.03mmと小さい。…

【赤痢】より

…　なお小児の赤痢菌感染症とみられる病気に疫痢があるが，これについては〈疫痢〉の項を参照されたい。
［アメーバ赤痢amoebic dysentery］
　赤痢アメーバEntamoeba histolytica(根足虫類に属する原虫の1種)が病原体で，その成熟囊子が飲食物とともに取り込まれ，ヒトへの感染が起こる。小腸内で球状の囊子cyst(径6～20μm)から出た栄養型vegetative form(長さ20～30μm)がアメーバ運動をしながら大腸の粘膜に侵入し，潰瘍を形成し，粘血便を排出する。…