Cellular components

Articles

• lysosomes
  24 September 2003

  Adj. lysosomal

• nucleus
  15 September 2003

  cell nucleus, cellular nucleus. Brown, 1833. nuclei WKPD
  Definition: The cellular organelle in eukaryotes that contains the genetic material.
  The major components of the nucleus are chromosomes, chromatin, which are dense strands of nucleoprotein fibers holding the genetic material of the cell, and the nuclear matrix, which is a protein-containing fibrillar network.
  The nucleoli ( nucleole ) are electron-dense structures that function in the synthesis of ribosomes and rRNA.
  The (...)

• chromatin
  13 July 2003

  See also : chromatin appearance / chromatin anomalies
  Definition: Chromatin is the DNA/protein/RNA complex extracted from eukaryotic lysed interphase nuclei. Just which of the multitudinous substances present in a nucleus will constitute a part of the extracted material will depend in part on the technique each researcher uses. Furthermore, the composition and properties of chromatin vary from one cell type to the another, during development of a specific cell type, and at different stages (...)

• intermediate filaments
  10 November 2003

  Cytoplasmic intermediate filaments (IF) can be divided into 5 subclasses based on their biochemical properties, immunologic specificity and tissue distribution: keratins in epithelial cells, vimentin, desmin in muscle cells, glial filaments (GFAP) in astrocytes, and neurofilaments in neurons. The different types of intermediate filament proteins share common structural features.
  Intermediate filament proteins constitute a highly diverse family of fibrous proteins in metazoans, which (...)

• nucleosome
  16 September 2003

  nucleosomes

• Birbeck granules
  8 April 2005

  Tennis racket shaped structures found in Langerhan’s cells in histiocytosis X (Langerhan’s cell histiocytosis) which includes eosinophilic granuloma, Letterer-Siwe disease and Hand-Schuller-Christian disease.
  See also
  Langerhans cells
  Langerhans cell histiocytosis

• corneodesmosomes
  13 December 2004

  Corneodesmosomes are intercellular structures that are involved in desquamation, the shedding of superficial corneocytes from the skin surface.
  Corneocytes are anucleated cells derived from keratinocytes during the late stages of terminal differentiation of cornified squamous epithelia such as the epidermis.
  See also
  corneocytes
  corneodesmosin
  CDSN
  DSG4

• synapse
  4 December 2003

  synapses; synaptic junction WKP
  See also
  synaptogenesis
  References
  Takeichi M, Abe K. Synaptic contact dynamics controlled by cadherin and catenins. Trends Cell Biol. 2005 Apr;15(4):216-21. PMID: #15817378#
  Kim E, Sheng M. PDZ domain proteins of synapses. Nat Rev Neurosci. 2004 Oct;5(10):771-81. PMID: #15378037#
  Matteoli M, Coco S, Schenk U, Verderio C. Vesicle turnover in developing neurons: how to build a presynaptic terminal. Trends Cell Biol. 2004 Mar;14(3):133-40. PMID: (...)

• ciliary axoneme
  23 January 2006

  Cilia and flagella comprise a microtubular backbone (the ciliary axoneme), which is surrounded by plasma membrane and is nucleated and organized by the basal body, which is a cylindrical structure that consists of nine microtubule triplets and is located underneath the cell membrane.

• brush border
  5 December 2005

  enterocytic brush border

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