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membrane plasmique - Poly-Prepas

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Transport<br />

Beaucoup de substances<br />

pénètrent dans la cellule en<br />

passant par des protéines<br />

formant des "tunnels" à travers<br />

la <strong>membrane</strong>.<br />

Certains de ces "tunnels"<br />

peuvent se fermer ou<br />

s'ouvrir.<br />

= valves nanotechnologiques<br />

24

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