NF1 and neurofibromatosis type 1: Specifically, the cluster of keywords in red (cluster 1,37) associated with the topic “neurofibromatosis type 1” includes the following: “Activation”, “Angiogenesis”, “Growth factor”, “Invasion”, “Mutation”, “Plexiform Neurofibroma”, “NF1 gene”, “Proliferation”, and “Ras”.