Autophagosome visualization by transmission electron microscopy

HQ Hu Qiu
HS Haixia Song
ML Man Luo
SK Shaobo Ke
WS Wei Shi
JC Jiamei Chen
WZ Wensi Zhao
HL Hesheng Luo
YC Yongshun Chen
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Tumor cells were obtained by trypsinization in paraffin-embedded tissues, washed with PBS and fixed in ice-cold 3% glutaraldehyde buffered at pH 7.4 with 0.1 M cacodylate for 24 h. The cells were then fixed in 1.0% OsO4, dehydrated in a progressive ethanol and acetone solution, and embedded in Epon 812 in sequence. Sections (1-μm thick) were cut and stained with uranium tetraacetate followed by lead citrate trihydrate. Subsequently, the sections were observed with a H-600 IV transmission electron microscopy and photographed.

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