IL-10-treated mDCs were stained with rhodamine phalloidin (Invitrogen, USA) and their F-actin structures and morphologies were examined on a confocal laser scanning microscope (Leica, Germany). Images were acquired and the F-actin contents were quantified by measuring the mean fluorescent intensities in each group. The lengths and numbers of cell membrane protrusions were also measured using Leica LAS Image Analysis software [28 (link)]. At least twenty cells in each group were selected for analysis.
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