FIG. 7.

Viral nucleocapsid alignment at the presynaptic membrane. (A) Smooth nucleocapsids in cross section (large arrows) along the membrane within a presynaptic neuronal process (top), characterized by the presence of presynaptic vesicles (pSV with small arrows). Several synapses with the adjacent cell body (bottom) are visible. Magnification, ×56,280. Bar = 200 nm. (B) Higher magnification of presynaptic neuron terminal (top) showing a longitudinal view of a smooth nucleocapsid (large arrows) aligned with the presynaptic membrane. Magnification, ×92,460. Bar = 200 nm. pSV and small arrows, presynaptic vesicles; MT, microtubules; M, mitochondria; ER, endoplasmic reticulum; N, nucleus.