Digestive and immune system

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Across
  1. 3. Intestinal hormone stimulated by fat/protein; triggers bile and pancreatic enzymes
  2. 5. Lymphocyte that kills virus-infected and cancer cells via perforin
  3. 9. ~30 serum proteins causing opsonization, inflammation and lysis
  4. 11. Enzyme in saliva; breaks starch into disaccharides SAU7 Digestion
  5. 12. Hormone from G cells; stimulates gastric juice release
  6. 15. Duodenal enzyme that converts trypsinogen into active trypsin
  7. 16. Lymphocyte peptide blocking viral replication and tumour growth
  8. 17. Fixed tissue phagocyte engulfing large particles; presents antigens
  9. 19. Wave-like smooth muscle contractions that propel food along the gut
  10. 20. Thymus hormone aiding T lymphocyte maturation
  11. 21. Lymphocyte that differentiates into antibody-secreting plasma cells
  12. 23. Finger-like gut projections that maximise absorption surface area
  13. 24. Most abundant WBC; first responder engulfing small pathogens
Down
  1. 1. Cell-surface complex that displays antigenic fragments to T cells
  2. 2. Liver product emulsifying fats into micelles for lipase access
  3. 4. Lipid-protein cluster absorbed by lacteals after fat digestion
  4. 6. Lymphocyte activated by antigen-presenting cells; drives cellular immunity
  5. 7. Molecule that triggers a specific immune response
  6. 8. Semifluid stomach paste emptied into the small intestine
  7. 10. Immunoglobulin secreted by plasma cells; binds specific antigens
  8. 13. Active pancreatic protease; activates other pancreatic enzymes
  9. 14. Dormant cell enabling faster secondary immune response
  10. 18. Released by acidic chyme; prompts pancreas to secrete bicarbonate
  11. 22. Inactive stomach enzyme activated by low pH to digest proteins