In the ultrathin sections of diseased wheat and maize, 66nm virus particles were observed either in tubules or scattered in the cytoplasm, especially in the viroplasm, where they were found side by side with empty subviral partioles. 在小麦或玉米病株超薄切片中,可见到直径66毫微米的病毒质粒分散于原生质中,或与亚病毒质粒共存于病毒质体中,或藏于管状结构中。
