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. 2017 Aug;99:40–48. doi: 10.1016/j.micron.2017.03.019

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© 2017 The Authors. Published by Elsevier Ltd.

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 1 — Liposomes. Liposomes in methylcellulose films containing uranyl acetate (A), phosphotungstic acid (B) and uranyl acetate/phosphotungstic acid mixture (C). Note the difference between the clarity of display of the membrane structures visualized with UA and UA/PTA (A and C respectively; larger structures, arrows and smaller structures, arrowheads). Inset in C shows characteristic precipitates generated in the mixed UA/PTA stain. The clumping of vesicles that occurs with PTA (arrow in B) alone is not apparent when the UA/PTA mixture is used. Bars 100 nm.