Table 1. Primers used in real-time PCR.

Gene	Forward primer 5′ to 3′	Reverse primer 5′ to 3′
Lin28a	TTGTCTTCTACCCTGCCCTCT	GAACAAGGGATGGAGGGTTTT
Β-actin	CCTGGCACCCAGCACAAT	GGGCCGGACTCGTCATACT
Let-7a	GGTGAGGTAGTAGGTTGTATAGTT	Uni-miR qPCR primer (TaKaRa)
U6	ACGCAAATTCGTGAAGCGTT	Uni-miR qPCR primer (TaKaRa)