title: Scab
text: # Scab
  
  Scab may refer to:
  
  ## Biology
  
  * Scab, a hard coating on the skin formed during the wound healing reconstruction phase
  * scAb, single-chain antibody fragment
  
  ### Infections and infestations
  
  * Apple scab, an apple tree (genus Malus) fungal disease caused by Venturia inaequalis
  * Black scab, a potato fungal disease caused by Synchytrium endobioticum
  * Common scab, a plant bacterial disease caused by Streptomyces species
  * Fusarium head blight, a fungal disease of plants, e.g., grain crops (especially wheat and oats), golf course grass, caused by the several species of Fusarium
  * Pear scab, a pear fungal disease caused by Venturia pirina or Fusicladium pyrorum
  * Poinsettia scab, a spot anthracnose disease caused by Sphaceloma poinsettiae
  * Powdery scab, a disease of the skin of potatoes caused by the protozoa Spongospora subterranea
  * Sheep scab, a skin disease of sheep caused by the mite Psoroptes ovis
  
  ## Labor
  
  * Scab, a pejorative term for a strikebreaker, a person who works despite strike action or against the will of other employees
  
  ## Other uses
  
  * South Coast Air Basin, in California, US
  * Johnny Dole & The Scabs, one of the first punk rock bands in Australia
  