>sp|B8QCG6|NGFV_AGKCO Venom nerve growth factor OS=Agkistrodon contortrix contortrix FLIGIWAAPKSEDNVPLGSPATSDLSDTSCAKTHEALKTSRNIDQHYPAPKKAEDQEFGS AANIIVDPKLFQKRRFQSPRVLFSTQPPPLSRDEQNVDNANSLNRNIRAKREDHPVHNRG EYSVCDSVNVWVANKTTATDIRGNVVTVMVDVNINNNVYKQYFFETKCRNPNPVPTGCRG IDARHWNSYC