Folia Parasitol. 1978;25(3):273-5.
The approximative molecular weight of toxoplasmin -- a skin reactive extract from Toxoplasma gondii -- was estimated by ultrafiltration through different Amicon membranes. The activity of the filtered and unfiltered product was compared with the aid of intradermal test on humans. The results indicate that the molecular weight of an active component in toxoplasmin is in the range from 10 000 to 50 000.
弓形虫素（一种来自刚地弓形虫的皮肤反应性提取物）的近似分子量通过不同的密理博膜进行超滤来估算。借助人体皮内试验比较了过滤产物和未过滤产物的活性。结果表明，弓形虫素中活性成分的分子量在10000至50000范围内。
