Here are four toxins: diphtheria toxin, cholera toxin, tetanus toxin, and exfoliative toxin. Choose two of them and answer the following questions: 1. Is it an exotoxin or an endotoxin? 2. Which bacterial species produces it? 3. Briefly describe its mode of action and how it causes damage to the host cells. Include specific signs and symptoms.

Please answer in full sentence: What are antiviral and antitumor agents? Why would it be significant if fluid extracted from tunicates caused viruses on a petri dish to die?

1. Explain why pathogens need to attach to host cells. 2. Describe various microbial attachment techniques. 3. Describe the 5 steps involved in establishing infection. 4. Explain the modes of action for staphylococcal alpha toxin, cholera toxin, diphtheria toxin, Shiga toxin, and anthrax toxin. 5. Differentiate endotoxin from exotoxin. 6. Describe secretion systems used to export exotoxins/effector proteins. 7. Discuss the three main ways intracellular pathogens avoid intracellular destruction. 8. Describe various strategies pathogens use to avoid the immune system. 9. Describe mechanisms used by Listeria and Salmonella to establish infection in the host cell

Compare and contrast the exotoxins and endotoxin. What are the limitations in their detection by molecular methods?