NFIB and small cell lung carcinoma: Most of the metastasized SCLC found in these mice upon injection with Ad5-CMV-Cre exhibited high expression levels of the prometastatic transcription factor NFIB (Dooley et al. 2011; Semenova et al. 2016), whereas they were negative for NFIB when induced by injection with Ad5-CGRP-Cre.