Table 1. Characteristics of granuphilin, Rab27a, and Munc18-1 clusters.

	Cluster number*	Localizations	Major axis (nm)	Ellipticity
Insulin-positive granuphilin	84	173.1 ± 9.9	184.7 ± 6.0	0.63 ± 0.02
Insulin-negative granuphilin	17	46.7 ± 4.0	107.0 ± 6.1	0.60 ± 0.04
False-positive granuphilin	19	37.8 ± 4.6	111.7 ± 10.7	0.57 ± 0.04
Granuphilin-positive Rab27a	63	198.1 ± 15.6	177.7 ± 10.6	0.65 ± 0.02
Granuphilin-positive Munc18-1	72	353.0 ± 24.9	85.8 ± 3.2	0.73 ± 0.02

^*The number of clusters identified by DBSCAN in 23 areas (each area ~8 μm²) from 3 cells.