HOWATSON A F, NAGAI M, ZURHEIN G M
Can Med Assoc J. 1965 Aug 28;93(9):379-86.
Specimens of brain tissue obtained at autopsy from three patients suffering from progressive multifocal leukoencephalopathy (PML) were examined by electron microscopy. In specimens from all three cases particles similar to those of the papova virus group were present, confirming previous observations. By the negative staining method it was possible to define the morphological characteristics of the particles more precisely and it was shown that they are structurally similar to virions of the polyoma-SV40-K type. The need is emphasized for obtaining fresh unfixed diseased tissue from persons suffering from PML in order that the biological properties of the particles can be investigated.
对3例进行性多灶性白质脑病(PML)患者尸检时获取的脑组织标本进行了电子显微镜检查。在所有3例的标本中,均发现了与乳头多瘤空泡病毒组相似的颗粒,证实了先前的观察结果。通过负染色法能够更精确地确定这些颗粒的形态特征,结果表明它们在结构上与多瘤病毒 - SV40 - K型病毒粒子相似。强调需要从PML患者获取新鲜的未固定病变组织,以便能够研究这些颗粒的生物学特性。