Human NSCLC were also found to express NRP2, such as tumour samples 1, 3 and 8 (Supplementary Fig. 1a), and certain Plexin (Plxn) A or D family member transcripts (Supplementary Fig. 1b), as well as genes encoding Nrp ligands of the Sema-3 family, such as Sema-3B, -3C, -3E and -3F (Supplementary Fig. 1c). Here, NRP1 is linked to non-small cell lung carcinoma.