甲型H1N1流感病毒RNA检测试剂盒（PCR方法）

甲型H1N1流感病毒RNA检测试剂盒(PCR方法)

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甲型H1N1流感病毒RNA检测试剂盒(PCR方法)

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甲型H1N1流感病毒RNA检测试剂盒(PCR方法)

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【公司名称】 广州健仑生物科技有限公司
【市场部】    杨永汉

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【腾讯  】 2042552662
【公司地址】 广州清华科技园创新基地番禺石楼镇创启路63号二期2幢101-103室

以前的图像试图产生这种咀嚼控制中心的相对模糊的图片。研究人员知道下颌和舌头的肌肉运动由一种称为运动神经元的特殊神经元控制，而这些反过来的运动是由称为前运动神经元的另一组神经元控制。但这些连接的确切性质——即哪一个前运动神经元连接到哪一个运动神经元——还没有确定。
高级研究作者、杜克大学脑科学研究所的成员、神经生物学的副教授王帆博士，已经研究老鼠的神经回路的映射多年。在她的指导下，斯坦尼克使用狂犬病毒的一种特殊形式，追踪咀嚼运动的起源。
狂犬病毒的工作原理是自然地向后跳跨神经元，直到它已经感染了受害者的整个大脑。在这项研究中，斯坦尼克采用了基因禁用版本狂犬病毒，这只能从肌肉跳转到运动神经元，然后回到前运动神经元。该病毒还载有绿色或红色荧光标记，这使研究人员能够看到它跳跃之后的位置。
斯坦尼克将这些荧光标记的病毒注入两个肌肉中，舌头外伸颏舌肌和下颌闭合咬肌。他发现，一组前运动神经元同时连接到运动神经元调节下颌打开和引发舌头伸出。同样地，他发现另一组连接到这两个运动神经元调节下颌闭合和负责舌头的回缩。结果表明，协调舌头和下颌的运动的一种简单方法通常能让舌头远离伤害。

Previous images attempted to produce a relatively blurred picture of this chewing control center. Researchers know that muscle movements in the jaw and tongue are controlled by a special type of neuron called motor neurons that are controlled by another group of neurons called preomotor neurons. But the exact nature of these connections - which motoneurons are connected to which an anterior motor neuron - has not been established.
Dr. Wang Fan, a senior research author and a member of the Duke University Institute for Brain Science and an associate professor of neurobiology, has been studying the mapping of neural circuits in mice for many years. Under her direction, Steinik uses a special form of rabies virus to track the origin of chewing motility.
The rabies virus works by naturally jumping back across the neuron until it has infected the victim's entire brain. In this study, Steinick used a genetically disabled version of rabies virus that can only jump from muscle to motor neurons before returning to motor neurons. The virus also carries a green or red fluorescent marker, which allows researchers to see where it jumps.
Steinnik injected these fluorescently-labeled viruses into both muscles, with the tongue extending to the genioglossus and the mandibular closed masseter. He found that a group of pre-motor neurons connected to motor neurons simultaneously regulate the opening of the lower jaw and trigger the tongue to stick out. Similarly, he found that another group connected to both motor neurons mediates mandibular closure and is responsible for the retraction of the tongue. The results show that a simple way of coordinating the movement of the tongue and jaw can usually keep the tongue away from injury.