大家都搜：
Unenveloped
1、viral particles, negatively stained with 1% uranium acetate, observed under transmission microscope, appeared to be enveloped or unenveloped because of the envelope being damaged.───病毒粒子经1％醋酸You负染后镜检，病毒粒子分为有囊膜和完全或部分失去囊膜两种。