BISC300 Lecture Notes - Lecture 21: Vibrio, Archaea, Blood Transfusion
1 Dec 2017
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Not going to talk about archaea here because we don"t have much evidence for them here. Host larger organism that supports survival and growth of smaller organism. Parasites are organisms that: live on or within a host organism and are metabolically dependent on the host, are any organism that cause disease, can be situationally dependent, so don"t worry about this definition. Pathogen something that causes a disease-state or pathogenic condition (which can sometimes lead to host"s death) Pathogenesis is complex; there are multiple points where you can interrupt it: now we"re looking at ways of disrupting the exposure process, lysogenic viruses are primary pathogens. Pathogens have to sense they"re in a different environment, find particular preferred niche of the environments that exist in that environment. Attachment and colonization means you can establish yourself on the layer: adherence structures pili, fimbriae (adhesion molecules on bacterium"s cell surface) bind complementary receptor sites on host cell surface, capsules, spikes.
