axon hillock en:Axon hillock en:Axon hillock en:Axon hillock axon hillock axon hillock Axon hillock axon hillock axon hillock English axon hillock en:Axon hillock axon hillock en:Axon hillock initial segment axon hillock en:Axon hillock axon hillock axon hillock http://en.wikipedia.org/wiki/Axon_hillock en:Axon hillock axon hillock http://en.wikipedia.org/wiki/Axon_hillock initial segment axon hillock Axon hillock axon hillock axon hillock axon hillock en:Axon hillock initial segment initial segment English axon hillock axon hillock axon hillock http://en.wikipedia.org/wiki/Axon_hillock axon hillock en:Axon hillock axon hillock en:Axon hillock