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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) biology of or pertaining to the perikaryon of a nerve; involving or occurring within a perikaryon
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Nitsch, "Loss of perikaryal parvalbumin immunoreactivity from surviving GABAergic neurons in the CA1 field of epileptic gerbils," Hippocampus, vol.
Mushynski, "Aberrant stress-induced phosphorylation of perikaryal neurofilaments," Journal of Biological Chemistry, vol.
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.
Although the immunoreactivity appeared more or less positive throughout the cells and cell processes, their perikaryal somata and proximal processes were especially intensely immunostained where the immunoreactivity appeared in forms of numerous small granules.