animal responses to pathogens

• • Range of structures and mechanisms to present pathogen entry. However, if these barriers are breached, the next line of defence involves more targeted responses
• • Animals have developed a variety lf ways in which to defend themselves against pathogens
• • These include physical and chemical:
  • Barrier– prevent the entry of pathogens into the body
  • Responses– prevent entry and fight off pathogens in the body