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80 results
  • Polarity in Drosophila oocyte - gurken mRNA
  • Polarity in Drosophila oocyte - bicoid & oskar genes
  • Drosophila embryo polarity
  • Genes determining polarity in Drosophila oocyte
  • Genetic control of polarity in Drosophila oocyte
  • Drosophila embryo polarity - bicoid mRNA
  • Drosophila embryo polarity - oskar mRNA
  • Drosophila embryo polarity - role of bicoid gene
  • Amino acids - non-polar residues. Molecular
  • Tabloid medicine chest from Scott Polar Expedition
  • Amino acids - non-polar residues,mol. models
  • Silver King, a polar bear, being taken by ship away from his homeland. Colour lithograph.
  • A white bear (Polar bear) standing on an ice floe. Coloured wood engraving by J. W. Whimper.
  • Two walrusses lying on a shore in a polar landscape. Coloured wood engraving by J. W. Whimper.
  • A polar bear encountered by Captain Cook on his third voyage (1777-1780). Engraving by P. Mazell, 1784, after J. Webber.
  • A polar bear standing on an ice floe in the Arctic sea. Etching by S. C. Miger, ca. 1808, after N. Maréchal.
  • Models of crystals prepared by Pasteur in his work on the relation between crystalline form, chemical composition and the direction of rotatory polarization.
  • Two polar bears despoiling the remains of a shipwreck in a desolate arctic setting. Reproduction of an oil painting by E. H. Landseer.
  • A polar bear standing next to its prey, a dead seal, on an ice floe in the Arctic sea. Colour lithograph after W. Kuhnert.
  • Three balloons travel over a polar landscape: proposed method of reaching the North Pole by J.P. Cheyne. Coloured wood engraving by C. Roberts, 1877.
  • The 1904 World's Fair, St. Louis, Missouri: the US Government building: natural history exhibit featuring stuffed wild animals: elks and a polar bear. Photograph, 1904.
  • Ornamented borders of Tartary oak (Quercus McCormickii), anchors and a polar bear round images of the Antarctic Sea with penguin and boat. Pencil drawing, c.1844.
  • A polar bear plunges into the sea from a very steep iceberg while fishermen look on from a nearby trawler. Coloured engraving by R. Havell after J. Ross.
  • A polar bear is devouring its prey, a seal, on an ice floe in the Arctic sea while three arctic foxes watch eagerly from an adjacent ice floe. Colour lithograph.
  • Above, two humming birds, two molluscs, a mocking thrush, a hoopoe, and a racoon; below, a bat, a wasp, two mongooses, a vulture, a fish and a polar bear. Engraving.
  • Astronomy: various apocalyptic scenes, including a seated Napoleon III with a smiling Queen Victoria, a woman pursued by a polar bear, and a battle in Russia. Coloured lithograph, [c.1867?].
  • Ornamented borders of Tartary oak (Quercus McCormickii), anchors and a polar bear round circular images of the Antarctic Ocean with penguin and boat. Pencil drawing by E. Wilson?, c.1844.
  • A cossack on horseback, holding a spear; a wolf; instruments of serfdom; polar bears on icebergs; and an imperial eagle in the sky; representing the Russian Empire. Wood engraving by H. Linton after E. Morin.
  • Two polar bears meet near the North Pole: despite the cold, the female bear is wearing an off-the-shoulder dress, which the male bear attributes to high tolerance of cold among northern females. Lithograph by CMK (?).
  • A circular crossed plate (?) incorporating indigenous symbols including a feather, a pipe, a polar bear and stones above a pot of flames; advertisement for the Urban Aboriginal AIDS Awareness program for the National AIDS Strategy supported by Health Canada. Colour lithograph by Julie Simoa.