| serologic prevalence of toxoplasma gondii in field mice, microtus fortis, from yuanjiang, hunan province, people's republic of china. | antibodies to toxoplasma gondii were investigated in serum samples of field mice, microtus fortis, from yuanjiang, hunan province, people's republic of china. the modified agglutination test (mat) incorporating formalin-fixed whole tachyzoites and mercaptoethanol was used to determine antibodies. antibodies to t. gondii (mat > or = 1:20) were found in 36 (29%) of 124 trapped mice. the antibody titers of positive sera (percentage in parentheses) were 1:20 (8.9), 1:40 (3.2), 1:80 (3.2), 1:160 (1.6 ... | 2004 | 15165081 |