Path Puzzle

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Across
  1. 2. study of cells
  2. 7. director
  3. 8. no mistakes allowed
  4. 10. for embedding
  5. 11. K
  6. 13. transports oxygen
  7. 15. systems
  8. 16. blood type
  9. 17. carrier of genes
  10. 18. a pair
  11. 21. not illicit
  12. 22. extremely thin
  13. 23. former prime minister
  14. 25. sample type
  15. 27. top layer
  16. 28. virus
Down
  1. 1. counts the money
  2. 3. trauma
  3. 4. anticoagulant
  4. 5. accreditation
  5. 6. needs others to survive
  6. 9. country collection centre
  7. 11. front line staff
  8. 12. collection centre not a toothpaste
  9. 13. training on line
  10. 14. self protection
  11. 19. quality management system
  12. 20. not cruise
  13. 24. and field
  14. 26. Angelina Jolie