申请人:Research Development Corp.
公开号:US05790627A1
公开(公告)日:1998-08-04
X-ray microscopy is used to observe a specimen by labelling the specimen with a molecule having a double bond, such as, for example, N-succinimidyl-4-nitrophenyl acetate or 5-(dimethylamino phenyl)-2,4-pentadienal, which bond to an amino group, and O-(4-nitrobenzyl)-N,N-diisopropyl isourea, which chemically bonds to a carbonyl group. Such labelling groups can generate fluorescence to facilitate the observation of the specimen. Observation is improved by using a monochromatic X-ray source having a photon energy lower than 2000 eV and a band width narrower than 1 eV.
X射线显微镜被用来通过标记样本的分子来观察样本,例如N-琥珀酰亚胺基-4-硝基苯乙酸酯或5-(二甲氨基苯基)-2,4-戊二烯醛等具有双键的分子,这些分子结合到氨基上,以及O-(4-硝基苯基)-N,N-二异丙基异脲,这些分子化学键合到羰基上。这些标记基团可以产生荧光,以便观察样本。使用单色X射线源可以提高观察效果,该源的光子能量低于2000电子伏特,带宽小于1电子伏特。