Figure 7.
NHE8-depletion does not affect the overall lumenal pH of dense MVB. (A) HeLa M-cells were treated with NHE8 siRNA using a double-knockdown protocol. Cells were treated with 30 μM DAMP for 30 min before processing for EM. Immunolabeling was carried out with anti-DNP antibodies followed by protein A–15 nm gold on ultrathin cryosections to label the compartments containing DAMP. (B) Quantitation of the data in A. Bar, 500 nm.