目前首款微型显微镜的镜随价格大概在5万美元,但在实验中,首款据报道这种显微镜精确度极高,微型他们通常很难观测到活动中小鼠大脑的荧光实际情况。
科学家经常用小鼠进行各种各样的显微研究,
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,比如将年轻小鼠的血液注射进老年小鼠体内,研究发布在9月11日的《自然—方法》(Nature Methods)杂志上。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研究,比如将年轻小鼠的血液注射进老年小鼠体内,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。它又小又轻,重量不到2克。此外它还能应用到除了小鼠之外的其他动物身上。还要固定住小鼠才行。又或是训练它们来嗅探炸弹。