Membrane fusion Authored: Marsh, G, 2007-04-30 20:49:40 GENE ONTOLOGYGO:0046766 Reactome Database ID Release 43168860 Reactome, http://www.reactome.org ReactomeREACT_6193 Reviewed: Squires, B, Rush, MG, 2007-04-30 20:48:45 The final step in the budding process is the fusion of the lipid membrane surrounding the virion core, producing an extracellular enveloped virus particle. Host Derived Lipid Bilayer Membrane Rich In Sphingolipids And Cholesterol Intracellular assembly complex Sialic Acid Bound Influenza A Viral Particle