NTRK1 and cancer: Nervous System Development | Pathways in Cancer | Herpes Simplex Virus 1 Infection | Signaling by Receptor Tyrosine Kinases | Signaling by Interleukins | Diseases of Signal Transduction by Growth Factor Receptors and Second Messengers | PI3K-Akt Signaling Pathway | Human Papillomavirus Infection | MicroRNAs in Cancer