A) Cell numbers and qRT-PCR expression levels of LIN28B, LIN28 and MYCN on d4 following LIN28B depletion in 2102Ep (left) and TCam2 (right). B) Western blots showing expression of LIN28B on d4 following LIN28B depletion in 2102Ep (left) and TCam2 (right), compared with NTC-treated cells. C) Levels of representative let-7 family members (let-7b, let-7d and let-7e) on d4 following LIN28B depletion in 2102Ep (left) and TCam2 (right). All values are referenced to NTC-treated cells. NTC=non-targeting-control siRNA, kd=knockdown, error-bars=SEM. *=p<0.05;**=p<0.005;***=p≤0.0001.