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 (pĕr′ĭ-kăr′ē-ŏn′, -ən)
n. pl. per·i·kar·y·a (-kăr′ē-ə)
The cell body of a neuron, containing the nucleus and organelles.

[peri- + Greek karuon, nut; see karyo-.]

per′i·kar′y·al (-ē-əl) adj.


(Biology) biology of or pertaining to the perikaryon of a nerve; involving or occurring within a perikaryon
References in periodicals archive ?
If cell growth represents simply an increase in the perikaryal area, the ratio of membrane protein to total protein would fall in parallel with the decline in the surface/volume ratio (volume increases with the cube of the perikaryal radius, whereas surface area increases with the square of the radius).
This eventually results in two distinct cell clusters instead of a repetitive perikaryal arrangement in the late sipunculan larva (Kristof et al, 2008; Wanninger et al, 2009).
Al-Abdulla AN, Leo JM (1998) Apoptosis of retrogradely degenerating neurons occurs in association with the accumulation of perikaryal mitochondria and oxidative damage to the nucleus.
Typically, the localization of [Beta]III was diffuse within the individual tumor cells and was distributed equally in both the perikaryal cytoplasm and in major fibrillated cell processes (Figure 2, a through f).
Typical AD neuropathological lesions include perikaryal neurofibrillary tangles, which consist of paired helical filaments.
Arsenic inhibits neurofilament transport and induces perikaryal accumulation of phosphorylated neurofilaments: roles of JNK and GSK-3beta.
Immunohistochemically, the cells with ganglionic features showed focal perikaryal staining for synaptophysin and chromogranin, whereas many of the spindled cells were immunoreactive for GFAE Immunoreactivity for MIB-1 was less than 2% of tumor nuclei, whereas that for p53 was close to 40%.