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bacterial infection - Coggle Diagram
bacterial infection
structure of bacteria
flagella (in some only)
capsule (in some only)
plasma membrane
gram positive (one layer of membrane)
gram negative (two layers of membrane)
ribosomes (free-lying in cytoplasm)
nucleic acid
DNA
RNA
life cycle
1st: infection (entry)
localised infection
example
liquid-like
abscess
hardened
granuloma
systemic infection
haematogenous spread
septicaemia
lymphatic spread
strangles
2nd: colonisation (proliferate)
epithelial surfaces
skin
urogenital tract
GIT
respiratory tract
3rd: invasion (damage)
cause physical trauma
release toxin; breach and damage epithelium
example
clostridial bacteria (causing clostridial disease)
tetanus
botulism
flesh eating bug
4th: dissemination (spreading from cells to cells)
lymphatic spread (via lymph vessel)
example
strangles
haematogenous spread(via bloodstream; in blood vessels)
example
septicaemia
immunity
phagocytosis
can be enhanced by antibody
phagocytosis by WBC
macrophages (monocytes)
neutrophils
treatment
antimicrobial drugs (antibiotics)
target prokaryotic cells only
target cell walls
target cell membrane
target ribosomes
target genetic material
antimicrobial resistance
superbug