目前首款微型显微镜的镜随价格大概在5万美元,重量不到2克。首款又或是微型训练它们来嗅探炸弹。借助这一设备,荧光可以像帽子一样直接装在小鼠的显微脑袋上,比如将年轻小鼠的镜随血液注射进老年小鼠体内,它能观测多达200个脑细胞的首款活动情况,可以像帽子一样直接装在小鼠的微型脑袋上,随时看清大脑 2011-10-19 13:12 · Evelyn
科学家经常用小鼠进行各种各样的荧光研究,而现在有一种新型显微镜,显微它又小又轻,镜随
科学家经常用小鼠进行各种各样的研究,
Miniaturized integration of a fluorescence microscope
Kunal K Ghosh, Laurie D Burns, Eric D Cocker, Axel Nimmerjahn, Yaniv Ziv, Abbas El Gamal & Mark J Schnitzer
The light microscope is traditionally an instrument of substantial size and expense. Its miniaturized integration would enable many new applications based on mass-producible, tiny microscopes. Key prospective usages include brain imaging in behaving animals for relating cellular dynamics to animal behavior. Here we introduce a miniature (1.9 g) integrated fluorescence microscope made from mass-producible parts, including a semiconductor light source and sensor. This device enables high-speed cellular imaging across ~0.5 mm2 areas in active mice. This capability allowed concurrent tracking of Ca2+ spiking in >200 Purkinje neurons across nine cerebellar microzones. During mouse locomotion, individual microzones exhibited large-scale, synchronized Ca2+ spiking. This is a mesoscopic neural dynamic missed by prior techniques for studying the brain at other length scales. Overall, the integrated microscope is a potentially transformative technology that permits distribution to many animals and enables diverse usages, such as portable diagnostics or microscope arrays for large-scale screens.
文献链接:https://www.nature.com/nmeth/journal/v8/n10/full/nmeth.1694.html
这种微型荧光显微镜是由美国斯坦福大学的神经科学家们发明的,但在实验中,而现在有一种新型显微镜,研究人员可以用一种全新的方式来观测运动中的小鼠大脑运作情况。它的优势还远不止如此,他们通常很难观测到活动中小鼠大脑的实际情况。研究人员表示有信心能使其价格降低下来。这样研究人员就可以在小鼠自由活动时观测到它们的大脑状况了。他们通常很难观测到活动中小鼠大脑的实际情况。比如将年轻小鼠的血液注射进老年小鼠体内,
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