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  • Trichuris muris is a parasitic nematode affecting mice. Following ingestion, T. muris eggs hatch in the large intestine where they develop into adults. The anterior end of the worm burrows into the lining of the gut, leaving the posterior end protruding into the lumen of the gut. The worms mate in this orientation, and the resulting eggs are released in to the gut lumen and shed faecally.
  • Zika virus, illustration
  • Cow foregut showing multiple warty growths (papillomas). These have grown from the gut lining, which is formed of squamous epithelium (consisting of flat, thin cells). These benign (non-cancerous) tumours can be caused by papillomavirus infection.
  • Cross section through mycoplasma mycoides cell, illustration
  • Reverse transcription, HIV viral life cycle, illustration
  • HIV translation, HIV viral life cycle, illustration
  • HIV attachment, HIV viral life cycle, illustration
  • HIV transcription, HIV viral life cycle, illustration
  • HIV assembly and budding, HIV viral life cycle, illustration
  • HIV and antibodies, HIV viral life cycle, illustration
  • HIV integration, HIV viral life cycle, illustration
  • HIV maturation, HIV viral life cycle, illustration
  • The ecology of influenza A viruses