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Development of Sarcocystis falcatula in cell cultures demonstrates that it is different from Sarcocystis neurona

  • D. S. LINDSAY (a1), J. P. DUBEY (a2), K. M. HORTON (a3) and D. D. BOWMAN (a3)

Abstract

The development of Sarcocystis falcatula merozoites in bovine turbinate (BT) cell cultures is described and compared with development of Sarcocystis neurona merozoites. Merozoites of S. falcatula entered BT cell cultures and increased in size until 3 days post-inoculation when the nucleus of some merozoites developed lobes. Developing schizonts present at 4 days contained a lobed nucleus or appeared multinucleate. A single mature schizont was observed 4 days p.i. Schizonts were numerous 5 and 6 days p.i. Merozoites were produced from blastophores on the schizont. S. neurona merozoites developed to mature schizonts by 3 days p.i. in BT cells and a residual body was often present. Transmission electron microscopy revealed that S. falcatula merozoites possessed more micronemes than did S. neurona merozoites. Our study demonstrates that S. falcatula and S. neurona are not the same parasite.

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Corresponding author

Corresponding author: Center for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, 1410 Prices Fork Road, Blacksburg, Virginia 24061-0342, USA. Tel: +540 231 6302. Fax: +540 231 3426. E-mail: lindsayd@vt.edu

Keywords

Development of Sarcocystis falcatula in cell cultures demonstrates that it is different from Sarcocystis neurona

  • D. S. LINDSAY (a1), J. P. DUBEY (a2), K. M. HORTON (a3) and D. D. BOWMAN (a3)

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