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  • Nanographene oxide interacting with bacteria, TEM
  • Stem cell transfer of mitochondria
  • Bottles labelled with humorous quotations comparing healthy lifestyle with excessive drinking; representing consequences of alcohol abuse. Colour lithograph by Pekárek, 1952.
  • Human brain cancer stem cells treated with graphene, SEM
  • Human brain cancer stem cells treated with graphene, SEM
  • Typhus prevention equipment: the Lelean sack disinfestor, used to disinfest clothing and kill lice carrying typhus. Photograph, 1900/1920 (?).
  • Civil engineering: the pier at Madras, India, built using screw piles (helical piles). Wood engraving, 1863.