Basic Immunology Concepts
A searchable, plain-language glossary of core terms and CD markers — the fast lookup before or after any chapter.
BrowseFoundations & Innate Immunity
Where every immune cell comes from, and the body's rapid, non-specific first line of defense.
Hematopoiesis & Immune Cells
Stem cell lineages, myeloid vs lymphoid branches, and cell identification.
Open Chapter CH. 02Innate Immunity · Foundations
Barriers, pattern recognition receptors, complement, and the acute inflammatory response.
Open Chapter CH. 03Host Defense: Innate & Adaptive
The big-picture integration of how innate and adaptive arms hand off and cooperate.
Open ChapterAdaptive Immunity Core
Antigen presentation, receptor diversity, and how T- and B-cells activate and mount a response.
Antigen Trafficking & Presentation
Antigen capture and processing, MHC class I vs II, cross-presentation, and APCs.
Open Chapter CH. 05Adaptive Immunity: Receptors & Development
BCR vs TCR structure, receptor diversity generation, and B- and T-cell development checkpoints.
Open Chapter CH. 06T & B Cell Activation
Two-signal activation, costimulation, T-cell help, and the germinal center reaction.
Open Chapter CH. 07Cell-Mediated Immunity
Cytotoxic T cells, NK cells, and the effector mechanisms that clear intracellular pathogens.
Open Chapter CH. 08Humoral Immunity & Antibody Isotypes
Antibody structure, class switching, isotype functions, and antigen-antibody effector mechanisms.
Open ChapterClinical Immunology
Hypersensitivity, immunodeficiency, transplantation, vaccines, and diagnostic serology.
Hypersensitivity & Autoimmunity
Types I–IV hypersensitivity reactions and the mechanisms behind major autoimmune diseases.
Open Chapter CH. 10Immunodeficiency · Integrated Review
Primary and acquired immunodeficiencies mapped by which arm of immunity fails.
Open Chapter CH. 11Transplantation Immunology
Graft rejection types, HLA matching, GVHD, and immunosuppressive therapy.
Open Chapter CH. 12Immunization & Vaccine Science
Active vs passive immunity, vaccine platforms, special populations, and key organism coverage.
Open Chapter CH. 13Serology & Immunodiagnostics
Antibody-based detection methods — ELISA, Western blot, agglutination, and clinical interpretation.
Open Chapter