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Images

  • ERK activity in normal cell
  • Chart showing secretory activity ofepidymis.
  • ERK activity in apoptotic cell
  • J. Wyeth "Purity, activity...", 1878: page
  • J. Wyeth "Purity, activity...", 1878: cover
  • J. Wyeth "Purity, activity...", 1878: page
  • Caspase activity in a normal cell, confocal micrograph
  • Caspase activity in cell triggered to undergo apoptosis
  • Astronomy: the sun, showing sunspot activity. Lithograph after de la Mare.
  • One injection up to 4 days of adequate penicillin activity : Benapen.