Figure 7. Optimal immunohistochemical detection of LC3B requires processing of tissue samples in a suitable fixative. Liver samples were isolated from Gfp-Lc3tg/tg mice that underwent starvation for 48 h. After fixation in different fixatives for 24 h, tissues were paraffin-embedded and stained for LC3B using biotinylated mouse monoclonal anti-LC3B (clone 5F10, Nanotools, 1:100) and Vectastain ABC. For formalin-fixed samples, heat-mediated antigen retrieval was performed either in citrate buffer (pH 6.0) or in EDTA buffer (pH 8.0). Scale bar, 20 μm.