
Keywords: CCD، دستگاه همراه با شارژ; TEM, transmission electron microscopy; AFM, atomic force microscopy; SNBP, sperm nuclear basic protein; Hepes, (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid; DIC, differential interference contrast; DTT, dithiothreitol; CCD, charge coupled device; C