Biology videos

Articles

• acute inflammation
  1 June 2004

  Digital cases
  Case 25 (HPC:25) : Acute appendicitis
  Case 94 (HPC:94) : Acute appendicitis
  Case 13 (HPC:13) : Acute synovitis
  Definition: Acute inflammation is a rapid response to an injurious agent that serves to deliver mediators of host defense-leukocytes and plasma proteins-to the site of injury.
  Types - Lesional patterns
  acute inflammation
  congestive inflammation
  cellular acute inflammation
  suppurative inflammation / suppuration
  abcess / abcesses / abcedation (...)

• 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 (...)

• keratinocytes
  3 December 2003

  WP
  A keratinocyte is the predominant cell type in the epidermis, the outermost layer of the skin, constituting 90% of the cells found there. Those keratinocytes found in the basal layer (stratum basale) of the skin are sometimes referred to as "basal cells" or "basal keratinocytes".
  Pathology
  vacuolated keratinocytes
  dysplastic keratinocytes
  tumoral keratinocytes
  See also
  epidermal basal cells
  corneocytes
  keratin
  Videos
  Keratocytes, found on the scales of fish, are (...)

• Cells
  11 July 2003

  cell

• human proteins
  4 June 2003

  Proteins are made of amino acids arranged in a linear chain and joined together by peptide bonds.
  Many proteins are the enzymes that catalyze the chemical reactions in metabolism. Other proteins have structural or mechanical functions, such as the proteins that form the cytoskeleton, a system of scaffolding that maintains the cell shape.
  Proteins are also important in cell signaling, immune responses, cell adhesion, active transport across membranes, and the cell cycle.
  Structure
  The (...)

• nucleotide excision repair
  19 November 2003

  NER pathway, NER system

• histones
  16 July 2003

  histone proteins

• mature teratoma
  8 November 2004

  Videos
  mature ovarian teratoma
  See also
  teratomas mature teratoma (dermoid cyst ) immature teratoma malignant teratoma
  germ cell tumors (GCTs )
  References
  Is a mature teratoma a premalignant condition? Hawkins EP. Hum Pathol. 1999 May;30(5):596. PMID: #10333236#

• DNA repair
  13 July 2003

  DNA reparation, DNA damage response, gene repair

• lymphatic system
  8 March 2007

  Videos
  See also
  Vessels

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