Biology videos

Articles

• histones
  16 July 2003

  histone proteins

• 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 (...)

• Listeria monocytogenes
  30 November 2003

  Listeria monocytogenes is a Gram-positive, motile facultative intracellular bacterium that causes severe food-borne infections.
  Miniepidemics of L. monocytogenes have been linked to dairy products, chicken, and hot dogs. Pregnant women, their neonates, the elderly, and immunosuppressed persons (e.g., transplant recipients or AIDS patients) are particularly susceptible to severe L. monocytogenes infection.
  In pregnant women (and pregnant sheep and cattle), L. monocytogenes causes an (...)

• mismatch repair diseases
  15 December 2003

  microsatellite instability, MSI-H, DNA microsatellite instability, MSI, mismatch-repair deficiency; MMR diseases; DNA Mismatch Repair Protein Deficiency
  Definition: A cause for genetic instability is the frequent appearance of mismatches on the double helix of DNA. (DNA mismatch repair)
  Base-base mismatches
  Base-base mismatches and small loops may occur during most of the main mechanism that process DNA, that is, replication, recombination and repair itself. From bacteria to eukaryotes, (...)

• DNA microarrays
  6 February 2007

  A DNA microarray (also commonly known as gene or genome chip, DNA chip, or gene array) is a collection of microscopic DNA spots attached to a solid surface, such as glass, plastic or silicon chip forming an array for the purpose of expression profiling, monitoring expression levels for thousands of genes simultaneously, or for comparative genomic hybridization.
  The affixed DNA segments are known as probes (although some sources will use different nomenclature such as reporters), thousands (...)

• enzymes
  8 March 2004

  Pathology
  enzyme diseases (enzyme defects)
  Videos

• 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 (...)

• gene expression
  16 October 2003

  protein expression

• protein structure
  29 October 2003

  Videos
  Protein structure
  References
  Ouzounis CA, Coulson RM, Enright AJ, Kunin V, Pereira-Leal JB. Classification schemes for protein structure and function. Nat Rev Genet. 2003 Jul;4(7):508-19. PMID: #12838343#

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