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  • Liver of a DEN (Diethylnitrosamine)-treated rat. DEN is a toxic chemical which quickly induces liver cirrhosis followed by HCC (Hepatocellular carcinoma, a primary liver cancer). Cirrhosis is an end result of fibrosis, the scarring of liver tissue. Fibrosis is caused by the overproduction of collagen, a component of the connective tissue forming the liver. To grade the amount of cirrhosis present in a liver sample, collagen is made visible using the dye sirius red. Under polarized light, collagen is observed as the golden to red color as shown in this image.
  • Diet and nutrition / Françoise Wright.
  • Drosophila oocyte showing actin/red and GFP-Staufen/green
  • 2 fused Drosophila egg chambers caused by mutant Notch gene
  • A Burroughs Wellcome Co medicine chest used on the British Antarctic Expedition
  • A Burroughs Wellcome Co medicine chest
  • A Burroughs Wellcome Co medicine chest
  • Cat skin showing hairs, a whisker and their blood supply.
  • Geology: various crystalline substances. Coloured lithograph by A. Pralon after G. Pouchet.
  • The romance of exploration and emergency first-aid...
  • Meiosis in an oocyte
  • Men and dogs in an arctic landscape with three hot-air balloons: proposed method of reaching the North Pole by J.P. Cheyne. Coloured wood engraving by C. Roberts.
  • Drosophila ovaries stained for actin/purple and DNA/orange.
  • Osteoclast resorbing bone
  • Oogenesis in Drosophila ovariole
  • New bone growth within a bioceramic bone substitute
  • Meiosis in an oocyte
  • Transgenic Drosophila expressing GFP in its eyes and ocelli
  • Human cells showing the stages of cell division
  • Human HeLa cancer cell, apoptosis
  • Malaria parasites in a mosquito midgut
  • Mast cell showing histamine granules
  • Zebrafish embryos with green fluorescent myotomes
  • Paracetamol crystals
  • HMG-CoA reductase
  • Calcium oxalate crystals in urinary sediment
  • Pierre-Louis Moreau de Maupertuis pointing out the length of a degree on the longitude of meridian in Lapland to two people. Etching, 1753.
  • Wine crystals
  • Wine crystals
  • Wine crystals