Exam I Flashcards
Microbe ➡️ dis
Flora in wrong location
Pathogen
Normal flora of microbes ⛔️opportunistic microbe colonization
Commensal spp
Must live in host cell
Ex:listeria
Obligate organism
CD4+
MØ+Ag:✳️HelpT-Cell➡️✳️M➰ killfn
IgM B-cell: ✳️H T-cell➡️✳️IgM⏩E/G
MHC II
CD8+
Cytotoxic T-Cell
MHC I
CD16
B-Cell ➡️plasma cell: Ab
NK Cells (Innate)⛔️req APC➡️⛔️viral
Cardinal ft of AI
SHMENDS
Specificity Contr& Homeostasis Memory Clonal Expansion Nonrxn to SELF Diversity Specialization
CD25+
Regulatory T-Cell➡️⛔️autoimm&chaos
All T-Cells have this signal portion of R
W/ A&B chain
CD3+
CCR7
Naïve T cells chemokine R ➡️LN parafollicular cortex
CXCR5
Naïve B-cell chemokine R ➡️LN follicle
AMPs
Agg protiens on surface ➡️pore form
Defensins: ✳️inflam
Cathelicidins: neutralize LPS
C-reactive proteins (CRP)
Opsonize & ✳️C’ pathway
MØ: rel IL-6➡️✳️liver: CRP secr➡️ binds Phosphocholine on dying cells
C’ Pathway
IgM complex/MB-Lectin/alt C3 path
➡️✳️C3 enz
C3a/C5a: chemokine➡️✳️inflam
C3b: opsonize
C5b: ✳️MAC pore ➡️lysis
PAMPs
Recog by PRR➡️✳️I.I.
DAMPs (recog. damage from necrotic cells)
TLR (1+2) & (2+6)
Surface Lipopeptides
TLR 2
Surface bact peptidoglycans