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255 results
  • Diatom frustule
  • Diatom frustule
  • HeLa cell, immortal human epithelial cancer cell line, SEM
  • Blood clot with crenated red cells
  • Lung cancer cells grown in culture, SEM
  • HeLa cell, immortal human epithelial cancer cell line, SEM
  • Silverfish scales
  • Lung cancer cell
  • Human saliva displaying ferning. During the fertile phase of a woman's menstrual cycle an oestrogen surge causes salt crystals to appear in the saliva. When viewed under the microscope the crystalline salt structure resembles fern leaves and can be used as an indication of a woman's increased chances of conceiving at this time.
  • Asian hair
  • Pancreatic cancer cells
  • Prostate cancer cell
  • Lung cancer cells
  • Drosophila proboscis
  • HeLa cells, immortal human epithelial cancer cell line, SEM
  • Breast cancer cell
  • Woodlouse, SEM
  • Prostate cancer cell, SEM
  • Tick on hedgehog
  • Diatom frustule
  • Lung cancer cell dividing
  • Lung cancer cells.
  • HeLa cell, immortal human epithelial cancer cell line, SEM
  • Woodlouse, SEM
  • Drosophila proboscis
  • Silverfish
  • Cotton thread
  • String
  • HeLa cell, immortal human epithelial cancer cell line, SEM
  • Human white blood cell