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  • Title: [Origin of sac-shaped walls in Entamoeba invadens cultures during the encystment process].
    Author: Arroyo-Begovich A, Ramírez-Rojas O.
    Journal: Arch Invest Med (Mex); 1980; 11(1 Suppl):17-23. PubMed ID: 7469637.
    Abstract:
    Changes in the population of trophozoites, cysts and bag-shaped walls in an encysting culture of Entamoeba invadens were determined. The results indicated that bag-shaped walls do not play a precursor role in the encystation of the organism. Samples of cells from encysting cultures were stained in vivo with Calcofluor M2R. Microscopic observations indicated also that bag-shaped walls do not play a precursor role in the formation of the cyst. It was suggested that bag-shaped walls arise from an abnormal response of some trophozoites when the culture is transferred to the encystation medium.
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