生物物理
Online ISSN : 1347-4219
Print ISSN : 0582-4052
ISSN-L : 0582-4052
50 巻, 4 号
通巻290号
選択された号の論文の22件中1~22を表示しています
巻頭言
特集 日本発の生物物理学
解説
  • 岩本 裕之
    2010 年 50 巻 4 号 p. 168-173
    発行日: 2010年
    公開日: 2010/07/25
    ジャーナル フリー
    Insects, the largest group of animals on the earth, owe their prosperity to their ability of flight and small body sizes. The ability of flight provided means for rapid translocation. The small body size allowed access to unutilized new niches. By acquiring both features, however, insects faced a new problem: They were forced to beat their wings at enormous frequencies. Insects have overcome this problem by inventing asynchronous flight muscle, a highly specialized form of striated muscle capable of oscillating at >1,000 Hz. This article reviews the structure, mechanism, and molecular evolution of this unique invention of nature.
  • 藤田 克昌
    2010 年 50 巻 4 号 p. 174-179
    発行日: 2010年
    公開日: 2010/07/25
    ジャーナル フリー
    Recent developments in fluorescence microscopy techniques have broken the diffraction limit and achieved the spatial resolution of sub 100 nm range. Saturated excitation (SAX) microscopy and stimulated emission depletion (STED) microscopy utilize saturable optical phenomena seen in laser excitation and stimulate emission of fluorescence molecules to induce strongly nonlinear optical effects for the resolution improvement. Photoactivated localization microscopy (PALM) and stochastic optical reconstruction microscopy (STORM) applied photoswitchable fluorescence probes for precise measurement of positions of the fluorescence probes in a sample in a few tens of nanometer scale. This review introduces the principles and the characteristics of those super resolution microscopy techniques with discussing the imaging formation and the resolution limit in conventional microscopy techniques.
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