Commons:Open Access File of the Day/2011

• 
  31 December: Salamanders are a model system for the study of limb regeneration.
• 
  30 December: Anatomy of the human ear – editable version.
• 
  29 December: Bradypodion taeniabronchum on the watch.
• 
  28 December: A lissencephalic human brain.
• 
  27 December: Tyrannosaurus with skin infection.
• 
  26 December: Leaf mines by Phyllocnistis hyperpersea larvae.
• 25 December: Chlorobalius leucoviridis mimicking the song of its prey.
• 
  24 December: The production and diffusion of nitric oxide (NO) (white) in the cytoplasm (green) of clusters of conifer cells one hour after mechanical agitation.
• 
  23 December: A male Oligoxystre diamantinensis.
• 
  22 December: Mimicry in Heliconius butterflies.
• 
  21 December: A sow with suckling pigs.
• 
  20 December: The chromosomes of a women.
• 
  19 Dec 2011: Rice terraces in the Philippines.
• 
  18 December: Baltimartyria rasnitsyni.
• 
  17 December: Pomacea canaliculata eggs.
• 
  16 December: Bee waggle dance.
• 15 December: Shimmering bees drive hornet away.
• 
  14 December: Northwest Crown Fire Experiments in Canada.
• 
  13 December: HIV on macrophage.
• 
  12 December: The sea slug Pleurobranchaea meckelii.
• 
  11 December: A bat in flight.
• 
  10 December: Samples in a seedbank.
• 
  9 December: Chalcolithic leather shoe from the Areni-1 cave.
• 
  8 December: Soft tissue reconstruction of the Longdan tiger.
• 
  7 December: Qualia of sound.
• 6 December: Burying behaviour of an adult sandfish (Scincus scincus).
• 
  5 December: Genetic subdivision in the giraffe based on mitochondrial DNA sequences.
• 
  4 December: Apertural view of the snail Rapana venosa.
• 
  3 December: Genome of Arthrobacter arilaitensis.
• 
  2 December: A Giant Haasts eagle attacking a New Zealand moa.
• 
  1 December: Actenoides concretus.