Biology videos

Articles

• nucleotide excision repair
  19 November 2003

  NER pathway, NER system

• histones
  16 July 2003

  histone proteins

• 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 (...)

• 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 (...)

• cardiomyocytes
  18 November 2003

  Adj. cardiomyocytic; cardiac myocytes, cardiomyocyte
  Digital slides
  NCK2-18: normal endomyocardial biopsy (PAS)
  NCK2-19: normal endomyocardial biopsy (PAS diastase)
  Definition: The myocardium is composed primarily of a collection of specialized muscle cells called cardiac myocytes or cardiomyocytes.
  They are arranged largely in a circumferential and spiral orientation around the left ventricle, the chamber that pumps blood to the systemic circulation.
  Cardiac myocytes have five (...)

• DNA repair
  13 July 2003

  DNA reparation, DNA damage response, gene repair

• systemic lupus erythematosus
  16 October 2003

  Definition: Systemic lupus erythematosus (SLE) is an autoimmune disease that is characterized by autoantibodies specific for highly conserved nuclear antigens, such as double-stranded DNA, histones and ribonuclear proteins.
  Digital case
  JRC:10585 : Cutaneous lupus erythematosus.
  Images
  LE cell in peritoneal fluid : https://twitter.com/pwraess/status/732709988368416768
  The requirements for the activation and response of self-reactive B cells — the source of autoantibodies — seem to be (...)

• teratoma
  10 March 2004

  teratomas
  Definition: Teratomas are neoplasms comprised of mixed elements derived from the three germ cell layers.
  Images
  Gastric teratoma in a 1yo male
  https://twitter.com/DraEosina/status/817663085376901121
  A teratoma is generally defined as a tumor arising from pluripotent cells, and it is precisely the heterogeneity of tissues present in such a tumor that best characterizes it; it is also commonly accepted that a teratoma must contain derivatives of more than one blastodermic (...)

• 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#

• Pseudomonas aeruginosa
  4 June 2004

  Adj. pseudomonal

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