The 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％醋酸铀负染后镜检，病毒粒子分为有囊膜和完全或部分失去囊膜两种。
The 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％醋酸铀负染后镜检，病毒粒子分为有囊膜和完全或部分失去囊膜两种。
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