BACTERIAL INVASION
Texto del Guión Gráfico
- Host
- Oh no! they are coming after me!!
- Bacteria
- Protein
- They are in me now! huhuhu
- Host
- Protein
- Exotoxins
- Protein
- Exotoxins
- Protein
- Protein
- Exotoxins
- Protein
- The invasion of a host by a pathogen may be aided by the production of bacterial extracellular substances which act against the host by breaking down primary or secondary defenses of the body.
- Most invasins are proteins (enzymes) that act locally to damage host cells and/or have the immediate effect of facilitating the growth and spread of the pathogen. The damage to the host as a result of this invasive activity may become part of the pathology of an infectious disease.
- Invasins usually act at a short range and may not actually kill cells as part of their range of activity; exotoxins are often cytotoxic and may act at remote sites (removed from the site of bacterial growth). Also, exotoxins typically are more specific and more potent in their activity than invasins. Even so, some classic exotoxins may play some role in colonization or invasion in the early stages of an infection, and some invasin.
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