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Secondary lysosomes contain a lumen in quick-freeze deep-etch (QF-DE)
images resembling etched matrix proteins rather than the honeycomb
appearance of acidosomes. Lysosomes often have one or more
paracrystalline layers in their lumens (arrowheads). The brush
of filaments lining the insides of lysosomal membranes seen in thin
sections is not particularly evident in these QF-DE views of fractured
lysosomes. EM taken on 5/20/95 by R. Allen with Zeiss 10A TEM. Neg.
31,500X. Bar = 0.2µm.
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