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  1. Scanning electron micrograph of a human T cell
  2. Arthritis of the neck, X-ray
  3. Bronchodilator drug crystals, SEM
  4. Forensic evidence
  5. Dental inlay being cut in a milling machine
  6. Pinned broken leg, X-ray
  7. Anaerobiospirillum thomasii flagella, TEM
  8. Antique milk of magnesia bottle
  9. Veterinarians examining the Greyhound in the office
  10. Close-up of beakers containing colored liquid
  11. Studio shot of hand holding stethoscope
  12. Studio shot of hand holding scalpel
  13. Microbiology research