MiR-145 is downregulated in OSCCs. Expression level of miR-145 in each individual case of OSCCs, adjacent normal tissues and normal mucosa tissues was evaluated using RT-qPCR. Small nuclear RNA (snRNA) U6 was used as an internal control. Data are presented as mean ± SD (insert). Details are described in the Materials and Methods. T, OSCC tissues; AN, adjacent normal tissues; N, normal mucosa tissues; **, P <0.01.