In vitro Cultivation of Meronts of Sarcocystis cruzi

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Abstract
Several established cell lines were tested for their ability to support in vitro development of meronts of Sarcocystis cruzi. Sporozoites penetrated bovine monocytes (BM), bovine pulmonary artery endothelial cells (CPA), Madin-Darby bovine kidney cells and mouse macrophages, but developed to meronts in BM and CPA only. Sporozoites developed to large meronts that contained approximately 180-350 merozoites, whereas merozoites formed small meronts with 50-100 merozoites. Mature large meronts were present at 18-36 days after inoculation (DAI) in BM and at 16-72 DAI in CPA. Small meronts were present at 23-115 and 23-91 DAI in BM and CPA. Considerably more merozoites developed in CPA than in BM. Sodium dodecyl sulfate polyacrylamide gel electrophoresis revealed that merozoites harvested at 36 and 48 DAI each had 1 unique proteins as well as numerous common proteins.