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[Advances in genetyping of Toxoplasma gondii].

Toxoplasma gondii is a nucleated cell obligate parasite, and can cause severe toxoplasmosis. The genetypes of Toxoplasma gondii isolates of different host infections have significant differences, and the pathogenicity and sensitivity to drugs of different genotypes of Toxoplasma gondii isolates are also significantly different. At present, the analysis of Toxoplasma gondii genotypes is performed by using PCR-RFLP, PCR of highly repetitive sequences, multiple PCR and nested PCR techniques, and the multiple loci of amplification are usually B1, SAG2, HSP70, GRA6 and other genetic markers. There are main 3 traditional genotypes of Toxoplasma gondii, and along with the deepening and extension of research, more and more genotypes are found. This paper reviews the advances in the research of Toxoplasma gondii genotypes.