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Figure 5.
The early degeneration stage. A,
PVM axon hillock in a glancing section. Many small
membrane whorls are situated near the plasma membrane.
B, A higher magnification view of a whorl from A, showing that it consists of onion skin-like
concentric layers. C, The PVM soma in a second animal is
swollen because of a large membrane-bound vacuole (vac),
which may be in direct contact with plasma membrane.
Arrows show small nested membrane whorls associated with
the plasma membrane. ER, Endoplasmic reticulum;
M, mitochondrion.
