Morphology Trophozoite The intracellular parasites( tachyzoite速殖子)are 3X6um, crescent shaped organisms that are enclosed in a cell membrane to form a pseudocyst(假包囊) measuring 10-100 um in size Toxoplasma gondii tachyzoites (by P.w. Pappas and S.M. Wardrop)Morphology • Trophozoite – The intracellular parasites (tachyzoite速殖子) are 3x6µm, crescent shaped organisms that are enclosed in a cell membrane to form a pseudocyst (假包囊) measuring 10-100 µm in size