Zvonarev A Iu, Drynov I D, Lotte V D, Alekseeva A K
Vopr Virusol. 1980 Mar-Apr(2):153-7.
Influenza virus nucleoid ("core") was obtained by the treatment of virions with hydrolytic enzymes without the use of fixing agents. The "core" buoyant density in sucrose density gradient was 1.24 g/cm3. The subvirus particles are completely devoid of surface proteins, glycoproteins, and their polypeptide composition is represented by group P proteins; NP and M proteins. RNA in the core is insensitive to the effect of RNase. Morphological analysis by electron microscopy revealed the presence of spherical compact particles without spikes on their surface.
流感病毒核衣壳（“核心”）是通过用水解酶处理病毒粒子而不使用固定剂获得的。“核心”在蔗糖密度梯度中的浮力密度为1.24 g/cm³。亚病毒颗粒完全没有表面蛋白、糖蛋白，其多肽组成由P组蛋白、核蛋白（NP）和基质蛋白（M）代表。核心中的RNA对核糖核酸酶（RNase）的作用不敏感。电子显微镜形态学分析显示存在表面无刺突的球形致密颗粒。
