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Uploaded by on Sep 13, 2009

Most Pennales (Diatoms) can move with a slow crawling movement because they produce a gluey secretion that runs along the rafe leak.

Molte Diatomee Pennales sono in grado di muoversi lentamente grazie alla produzione di una secrezione collosa, la cui corrente extraparietale lungo la fessura del rafe, consente un movimento strisciante.

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