已知的仅有的病毒样本储存在世卫组织批准的两个安全的实验室中（美国亚特兰大的疾病预防控制中心，俄罗斯联邦科尔索沃的病毒和生物技术研究中心）。
The only known samples of the virus are stored in two secure laboratories approved by WHO (Centers for Disease Control and Prevention, Atlanta, USA and Vector, Kostsovo, Russian Federation).
方法采集渔民在大鹏湾海域捕获的河豚鱼鲜活或冰鲜，采用小鼠生物试验法测定样本鱼不同组织的河豚鱼毒素（TTX）含量。
Methods The tetrodotoxin (TTX) in different tissues of live or refrigerated puffer fishes in Dapeng Bay was tested by bioassay using mouse.
生物光学显微镜对生物细胞(组织)厚样本成像时，由于受衍射和散焦成份的共同影响，成像分辨率明显下降。
When biological cells or tissue thick specimens are imaged by bio-optical microscopy, image resolution decreased significantly due to the impact of diffraction and defocus.
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