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Expression of the indicated miRNAs in Prolif or day 2, 7, or 14 Sp Caco-2 cells (A) or in tissue fractions mechanically isolated sequentially along the crypt-luminal axis of the human colon (B) was determined as described in Fig. 8. Unpaired, two-tailed Student's t-test (relative to Prolif): *P < 0.05; **P < 0.005.
