全文请访问：http://www.spm.com.cn/papers/p67.pdf
spectrin molecules extracted from human blood cell membrane have been examined by atomic force microscopy(AFM)without using shadowing or stairing procedures.A drop of solution containing spectrin molecules was deposited on the freshly cleaved mica substrate.After about 1 min,the residual solution was removed with a piece of filter paper.Afterwards the sample was imaged with a home-made atomic force microscope(AFM)in air in a constant force mode.The obtained AFM images revealed that the spectrin molecules prepared from the above procedures exhibit several kinds of structures as follows:(i)the compact rod-like spectrin heterodimers with a length of around 100nm;(ii)bent or curved linear tetrarners with a length of around 200nm;(iii)somewhat curved spectrin hexamers,octomers or decamers with lengths of about 300,400 or 500nm;and(iv)high oligomers with a length above 1000nm.
全文请访问：http://www.spm.com.cn/papers/p67.pdf 扫描探针显微镜(SPM/AFM/STM)
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