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  1. Trachea and major bronchi of lungs. respiratory system
  2. Human anatomy, artwork
  3. Digital illustration of nose and nasal sinus anatomy
  4. Lung tissue, TEM
  5. Lung blood vessels
  6. Human body showing heart and main circulatory system position
  7. Pulmonary veins and arteries. circulation, cardiovascular system
  8. Coronary Artery Bypass
  9. Lungs in situ - anterior view. respiratory system
  10. Heart and lungs
  11. Human body with internal organs, nervous system, lymphatic system and circulatory system
  12. Perspective view of human body, whole organs and bones
  13. Heart
  14. Right lung - medial view. respiratory system
  15. Respiratory system, artwork
  16. Human upper body showing bones, lungs and circulatory system
  17. Respiratory tract, artwork
  18. Red Blood Cells, SEM
  19. Illustration of lung bronchioles and alveoli
  20. Heart and neck blood vessels
  21. Artwork of alveoli
  22. Conceptual image of human lungs and rib cage
  23. Cranial nerves
  24. Cells in lung tissue, SEM
  25. Heart and lung anatomy, 17th century
  26. Red Blood Cells, SEM
  27. Lung blood vessel nerves, 1844 artwork
  28. Red Blood Cells, SEM
  29. Heart with arteries showing cholesterol in one and plaque in the other
  30. Lung bronchioles
  31. Lungs