Host-Pathogen Interactions - Robison Flashcards
Mutalism
Both parties benefit
Parasitism
One party benefits and the other is harmed
Commensalism
One party benefits while the other is unphased
What are factors affecting symbiosis?
Location and Host immunity
What is pathogenicity?
The ability of a pathogen to cause disease in a suceptible host
What is virulence?
The degree of pathogenicity
What are some mechanisms to avoiding phagocytic clearance?
Capsule
Inhibit opsonization and chemotaxis
Inhibits lysozymal fusion
Escape the lysosome and grow in the cytoplasm
What is the dose of pathogens needed to create infection?
Varies from organism to organism
What are some examples of adhesion?
hooks, flagella, pili, receptor proteins, harpoons, suckers, and dextrans
What are the Gram negative secretions that shoot directly into the cell?
Types 3 and 4
What is the active part of the AB toxin?
A
What part of the AB toxin attaches or plants?
B
