Find the term

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Across
  1. 5. without a breast
  2. 6. rapid heartbeat
  3. 7. Against bacteria
  4. 8. transplant (of tissue between the) same (species)
Down
  1. 1. Slow heartbeat
  2. 2. difficult childbirth
  3. 3. Poor or bad nutrition
  4. 4. inflammation of many joints of the body