Biomedical Engineering Reference
In-Depth Information
Fig. 6.44
Bright-field TEM
image of a slice of liver
frozen under high pressure,
cryo-dehydrated without
OsO
4
, cryo-embedded and
contrasted using uranyl
acetate/lead. This image
shows fractured
mitochondria, either from the
high pressure or due to
mechanical tearing when
recovering the sample after
freezing (
J. Boumendil,
CMEABG - UCB Lyon 1
)
4.11 Artifacts Induced by the Fine Particle Dispersion Technique
Fig. 6.45
Bright-field TEM
image of Pt/Ru/Sn (metal)
powder dispersed on a carbon
film grid. The particles were
dissolved in ethanol, then
agitated under ultrasound
waves before a drop of
supernatent was deposited on
the support grid. The particles
remain agglomerated
(
D. Laub, EPFL-CIME,
Lausanne
)
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