Harry and peter
| Front | Immune response in invertebrates |
| Back | Physical barriersExoskeletons: Arthropods possess hard exoskeletons made from chitin which prevents pathogen entryCuticle: Worms posses outer cuticle with similar function to exoskeletonShells: some molluscs may have hard shells to offer similar protectionChemical barriers:Toxins, chemical compounds and enzymes to prevent growth of pathogens and antimicrobial purposesInvertebrates experience inflammation but not fever since they cannot regulate body temp |
| Front | What are alleles |
| Back | A variant of a certain gene. e.g. blue eye colour vs brown |
| Front | What is an antigen |
| Back | A marker on the surface of a pathogen which allows recognition by immune cells |