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IMF-093-01-0001-en	Why is barrier defence described as chemical and ecological as well as physical?	Besides keratinised epithelium and tight junctions, skin uses acidity, lipids and antimicrobial peptides, while commensals occupy niches, consume nutrients, produce inhibitory metabolites and educate immunity.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0002-en	How do epithelial cells take part in defence beyond forming a wall?	They sense microbes and damage, release cytokines, chemokines, alarmins and antimicrobial peptides, and alter junctions or cell shedding.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0003-en	In what two opposite ways can barrier injury harm tissue?	Disruption exposes extracellular matrix and permits invasion, while excessive repair can cause fibrosis.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0004-en	Why does the location of a nucleic acid matter to pattern-recognition sensors?	Toll-like receptors sit on the plasma membrane or endosomes and other sensors in the cytosol, so nucleic acid in the wrong compartment, such as misplaced DNA, itself signals danger.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0005-en	How does protein-rich inflammatory exudate both help and harm?	Increased vascular permeability lets it deliver antibodies, complement and clotting factors to the tissue, but the same fluid causes swelling.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0006-en	Why is selectin binding alone insufficient for a leukocyte to leave the blood?	Selectins mediate only transient rolling; chemokines displayed on endothelial glycosaminoglycans must activate integrins, which then bind immunoglobulin-family molecules for firm adhesion before transmigration.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0007-en	Why do leukocyte-adhesion defects cause recurrent infection with little tissue pus despite high blood neutrophils?	Defective integrins, selectin ligands or trafficking prevent recruitment, so neutrophils accumulate in blood but fail to reach the infected tissue.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0008-en	How does the neutrophil phagosome kill ingested microbes?	It fuses with granules; NADPH oxidase generates superoxide, myeloperoxidase forms hypochlorous chemistry, and proteases, antimicrobial peptides and ion flux attack the microbe.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0009-en	Why are neutrophil extracellular traps a double-edged defence?	Extruded chromatin decorated with antimicrobial proteins immobilises microbes, but in excess it promotes thrombosis and autoantigen exposure.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0010-en	Why is the simple M1 versus M2 classification of macrophages misleading?	It captures only extremes, whereas macrophages phagocytose, present antigen, regulate iron and lipid and coordinate repair in states that are multidimensional and reversible.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0011-en	How do opsonins convert microbial binding into engulfment?	IgG binds Fc receptors and complement fragments bind complement receptors on phagocytes, and the resulting receptor clustering triggers actin-driven engulfment.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0012-en	Why does chronic granulomatous disease cause severe infection while myeloperoxidase deficiency is often mild?	NADPH-oxidase defects impair the respiratory burst, causing recurrent bacterial or fungal infection and granulomas, whereas in myeloperoxidase deficiency other killing systems remain.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0013-en	How does caspase-one activation in the inflammasome cause inflammatory cell death?	Caspase one processes interleukin-1 beta and interleukin-18 and cleaves gasdermin D, whose pores drive inflammatory pyroptotic death.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0014-en	How do monosodium urate or cholesterol crystals trigger inflammation?	They damage lysosomes, a disturbance that NLRP3 senses indirectly, activating the inflammasome and contributing to gout and atherosclerosis.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0015-en	Why can periodic fever without autoantibodies respond to interleukin-1 blockade?	Inherited gain-of-function variants cause periodic-fever syndromes driven by innate inflammasome signalling rather than by infection or classic autoimmunity.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0016-en	How do type-one interferons protect cells that are not yet infected?	They bind receptors on infected and neighbouring cells, and JAK-STAT signalling induces antiviral genes that inhibit translation, degrade RNA, alter metabolism and increase antigen presentation.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0017-en	Why does loss of MHC class one make an infected cell vulnerable to natural killer cells?	Healthy class-one expression delivers an inhibitory signal, so losing it or expressing stress ligands tips the balance toward activation and perforin and granzyme release.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0018-en	What distinguishes innate lymphoid cells from helper T cells despite their similar cytokine programmes?	They reside at barriers and produce cytokines rapidly without rearranged antigen receptors.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0019-en	How does dendritic-cell maturation change the cell's job?	It shifts from phagocytic capture toward migration, antigen presentation and costimulatory molecules, linking innate sensing to naive T-cell activation.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0020-en	Why does the acute-phase response contribute to anaemia of inflammation?	The liver increases hepcidin, which degrades ferroportin and lowers iron availability; this restricts microbes but also contributes to anaemia.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0021-en	Why does sepsis management target both the trigger and the physiology?	Organ dysfunction arises from a dysregulated host response with endothelial activation, leak, coagulation, mitochondrial stress and immune suppression, so source control and antimicrobials are paired with perfusion and organ support.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0022-en	What role does efferocytosis play in resolution, and what follows if it fails?	Clearing apoptotic cells usually suppresses inflammation and promotes repair; failed clearance leads to secondary necrosis and autoantigen exposure.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0023-en	How does trained immunity differ from adaptive memory, and what is its opposite?	It is durable altered responsiveness of myeloid or progenitor cells through epigenetic and metabolic change without antigen-specific receptor rearrangement; endotoxin tolerance instead dampens repeated responses.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending
IMF-093-01-0024-en	Why can fever with raised neutrophils not be assumed to mean infection?	Damage and infection activate the same pathways, since sterile necrosis releases DNA, ATP, urate, mitochondrial molecules and matrix fragments, so microbiology, anatomy, timing and treatment response are needed.	Integrated Medical Foundations; chapter 93, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 5d069bcbc796bf731d977a3b4768f4a8bcbb2df4fb036e0bbdccd99dcdb7e129; editorial review pending	imf lang::en chapter::093 module::093-01 review::pending