Additional file 4.

Negative controls for immunofluorescent microscopy analysis of HCT116βw cells. (A) Cells processed for conventional immunofluorescent microscopy using either APC-M2 pAb or no primary antibody, followed by goat-anti-mouse Alexa 488 secondary antibody reveal no recognition of the purified rabbit sera by the goat-anti-mouse secondary antibody. (B) Cells processed for conventional immunofluorescent microscopy using mouse monoclonal antibody against lamin B1, pan-keratin, or APC (ali12-28) or no primary antibody, followed by goat-anti-rabbit Alexa 568 secondary antibody reveal no recognition of the mouse monoclonal antibodies by the goat-anti-rabbit secondary antibody. (C) Cells processed for confocal microscopy were stained with goat-anti-rabbit Alexa 568 and goat-anti-mouse Alexa 488 secondary antibodies without primary antibody application. These images served as the negative control for the correlation coefficient analysis. Scale bar, 5 μm.

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Wang et al. BMC Cell Biology 2009 10:75   doi:10.1186/1471-2121-10-75