Table 1.

Gap Junction Features Viewed by Freeze Fracture

Nematode Tissue	Intramembrane Particles
	P‐Face (%)	Packing Density	Plaque Size
Hypodermis	90	Low	Medium
Muscle	90	High	Large
Intestine	90	High	Large
Neuron	∼50	Low	Small
Distal germline	90	Low	Small
Proximal germline	80	High	Large

N.B. Freeze fracture data from Hall, 1987; Hall et al., 1999; Starich et al., 2014; and Hall, unpublished. Exact diameters of gap junction IMPs or their pore sizes would require much higher resolution studies, such as those carried out for INX‐6 in intestine (cf., Oshima et al., 2016).