NTRK2 and in situ carcinoma: In the PFC, ipsilateral and contralateral TrkB and p-TrkB levels were unaffected in thermally injured rats with or without prior exposure to CIS as evidenced by no significant difference among NS, NS + I and S + I groups (Two-way ANOVA: TrkB: all F’s < 0.7, all P’s > 0.05, Fig. 7a; pTrkB: all F’s < 1.5, all P’s > 0.05, Fig. 7b).