Table 1.

VGLUT terminal dimensions by PhMN compartment

	Compartment
	Soma	Primary Dendrite
Equivalent diameter, µm	1.832 ± 0.012	1.780 ± 0.023
Elongation	2.503 ± 0.019	2.456 ± 0.045
Sphericity	0.625 ± 0.002	0.634 ± 0.005
Major axis length, µm	3.633 ± 0.039	3.419 ± 0.075*
Minor axis length, µm	1.872 ± 0.019	1.772 ± 0.034
VGLUT terminal volume, µm3	3.108 ± 0.018	2.754 ± 0.105*

Data are means ± SE. Vesicular glutamate transporter (VGLUT) terminal dimensions are summarized from somal and dendritic compartments from 30 PhMNs (n = 2,675 terminals). Equivalent diameter is the diameter of a sphere with the same volume for each identified VGLUT terminal. Elongation is the ratio of maximum to minimum Feret diameter. Sphericity is the ratio of surface area of the VGLUT object to that of a sphere with the same volume.

^*There was a significant effect of PhMN compartment on major axis length (F_1,2615 = 5.47; P = 0.019) and VGLUT terminal volume (F_1,2615 = 4.95; P = 0.026), but not for other dimensions (P > 0.074).