microscopie Flashcards

1
Q

les differnets MO est leur caracteristiques

A

mo standard : pouvoir separateur 0.1µm
mo en contraste : de phase C non colorees et vivantes on obtient les images grace a la difference de densite
mo a fluorescence : detecte la fluorescence en utilisant lumiere uv

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2
Q

technique de prepa pour MO

A

F ixation (tue les C mais conserve structure)
D eshydratation
I nclusion en paraffine
M icrotomie
E talement
C oloration
O bservation

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3
Q

coupe et diff type de ME

A

la coupe ultrafinr d’ordre 30nm
ME a transmission : electron traverse l’echantillon
ME a balayage : electron balaye l’echantillon sans le traverser (observation du relief de la surface cellulaire)

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4
Q

technique prepa pour ME

A

F. D. I:(resine). UM. C(meteaux lourd). O.

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5
Q

quand on utilise lame histologique ?

A

concernant les tissus solide majorite des organes

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6
Q

les diff frotis

A

sanguin
moelle osseuse
vaginal
sperme

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7
Q

elements qu’on peut pas observer par le MO

A

on ne peut pas voirles organites celulaire ni les chromosomes

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8
Q

que peut on observer avec le ME a balayage

A

observation de la surface cellulaire

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9
Q

comment obtenire des repliques

A

par cryodecapage

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10
Q

etape de cryodecapage/cryofracture

A

congelation, fracture, ombrage, replique
C(k).F.O.R.

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11
Q

de quoi est constitue l’heterocrayon

A

deux celulles diff ou plus

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12
Q

dans une observation les cellules sont

A

ils sont mortes dans tous les observations sauf observation au MO en contrastede phase

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13
Q

comment obtenire l’heterocrayon

A

il est obtenue apres hybridation somatique

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