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  1. Trachea and major bronchi of lungs. respiratory system
  2. Human anatomy, artwork
  3. Respiratory Anatomy, 19th Century Artwork
  4. Lung tissue, TEM
  5. Lung cells, fluorescent micrograph
  6. Lung blood vessels
  7. Human body showing heart and main circulatory system position
  8. Pulmonary veins and arteries. circulation, cardiovascular system
  9. Bronchial tree and lungs, artwork
  10. Heart and lungs, historical illustration
  11. Coronary Artery Bypass
  12. Lungs in situ - anterior view. respiratory system
  13. Anatomy of the bronchus and bronchial tubes
  14. Heart and lungs
  15. Heart And Lungs, Historical Illustration
  16. Human body with internal organs, nervous system, lymphatic system and circulatory system
  17. Perspective view of human body, whole organs and bones
  18. Heart
  19. Right lung - medial view. respiratory system
  20. Respiratory system, artwork
  21. Human upper body showing bones, lungs and circulatory system
  22. Respiratory tract, artwork
  23. Red Blood Cells, SEM
  24. Heart and neck blood vessels
  25. Conceptual image of human lungs and rib cage
  26. Cranial nerves
  27. Cells in lung tissue, SEM
  28. Heart and lung anatomy, 17th century
  29. Chest Anatomy, 19th Century Illustration
  30. Red Blood Cells, SEM
  31. Blood From Wound Site, SEM
  32. Red Blood Cells, SEM
  33. Heart with arteries showing cholesterol in one and plaque in the other
  34. Blood From Wound Site, SEM
  35. Human Alveoli, Artwork