Generic sample from Homo sapiens
Homo sapiens
Serial cryosections where obtained from the tumor. The first and last cryosection of each series was H&amp;E stained and used to verify tumor cell content. Cryosections not used for histologic analysis were transferred to TRIazol buffer (QIAGEN, Hilden, Germany) and total RNA was extracted using the miRnEASY kit (Qiagen) according to the manufacturer’s recommendations.