The lmpA kd strain shows severe defects in phagocytosis. The lmpA kd strain shows severe defects in phagocytosis. (A–F) The uptake of different fluorescent particles [1 µm yellow-green (YG)-beads (A), Alexa Fluor 488-labeled K. pneumoniae (B) and B. subtilis (C), and GFP-producing M. smegmatis (D), M. marinum wt (E) and M. marinum L1D (F)] by wt, lmpA kd, lmpB ko or lmpC ko cells was monitored by flow cytometry. Data are mean±s.e.m. of three to four independent experiments. RFU were normalized to the fluorescence of wt cells after 60 min of uptake. Natascha Sattler et al. J Cell Sci 2018;131:jcs218040 © 2018. Published by The Company of Biologists Ltd