Heart Transplant - crossword

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Across
  1. 1. a surgical procedure in which an organ is moved from one body to another
  2. 4. something that stops progress
  3. 7. a medicine used to treat disease
  4. 8. for example muscle, nerve or skin
  5. 9. to find an answer to a problem
  6. 10. a person who gets an organ during a transplant
  7. 13. like Dolly the sheep, made as a genetic copy
  8. 14. structures in the heart that control the direction of blood flow
Down
  1. 2. gene that makes tissues keep growing
  2. 3. changed bu sientistis using genes, genetically...
  3. 4. taking the place of something old or damaged
  4. 5. xenotransplantation is transfer of cells or tissues across...
  5. 6. when the body,s immune system attacks a transplanted organ. ... rejection
  6. 9. pig hearts are similar in ... and size to human hearts
  7. 11. the body's defense against infection (system or responce)
  8. 12. the smallest basic unit of the body