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作者将厚片200个油镜视野(0.5μl血)中每视野至少含一个无性体者所占比例与传统计数平均每个白细胞的滋养体数这两种估算血中恶性疟原虫浓度的方法作了比较。后法假定血中白细胞数恒为8000个/μl,但实际数可在5000—10000/μl间波动,因而精确度受限。厚片滋养体平均密度为144和1920个/μl血时,阳性视野分别占9.5％和99.5％。当滋养体密度<2000/μl血,其全部视野均阳性的厚片不到5％。人群中高原虫
The authors estimate the proportion of at least one asexual in each field of view in a total of 200 oil-skimmed fields (0.5 μl of blood) and the conventional count of nodules per leukocyte. Two methods for estimating the concentration of Plasmodium falciparum in blood A After the law assumes that the number of white blood cells in the blood constant 8000 / l, but the actual number of 5000-10000 / l between the fluctuations, and thus the accuracy is limited. Thick nodules average density of 144 and 1920 / l blood, the positive field of view accounted for 9.5% and 99.5%. When trophozoite density is <2000 / μl blood, less than 5% of the slices are positive in all fields. The population of highland insects