These data indicate that at least two SNARE complexes , made up of syntaxin 4 / SNAP 23 / VAMP 1 and syntaxin 4 / SNAP 23 / VAMP 2 , are involved in the exocytosis of specific and tertiary granules , whereas interactions between syntaxin 4 and VAMP 1 / VAMP 7 are involved in the exocytosis of azurophilic granules . 0.57872851^^^