What form of Entamoeba histolytica is found in the human intestine?

Entamoeba histolytica has two primary forms: the cyst and the trophozoite. Within the human intestine, the active and pathogenic form is the trophozoite. This stage is characterized by its motile, feeding behavior, where the organism can invade the intestinal lining and cause disease, including amoebic dysentery.

In contrast, the cyst form is the infective stage that permits the parasite to survive outside the host in unfavorable conditions and facilitates transmission via contaminated food or water. Oocysts and spores refer to different types of reproductive structures found in other parasites and are not associated with Entamoeba histolytica.

Thus, the presence of the trophozoite in the human intestinal tract is critical for understanding the pathogenicity of E. histolytica and its role in amoebic infections.