Active vs Passive Immunity: Types, Differences, and Examples
The difference between active and passive immunity, with the four types (natural and artificial) and clear examples: vaccination, infection, maternal antibodies, and antivenom. For...
Back to tags 
Tag
Innate Immunity
Articles related to Innate Immunity.
Natural Killer (NK) Cells: Missing-Self Recognition and Function
What natural killer (NK) cells are, how the missing-self mechanism lets them catch virus-infected and tumor cells that hide from T cells, and how they bridge innate and adaptive im...
Components of the Innate Immune System: The Body's First-Response Team and How It Works Together
The components of the innate immune system explained as one working team: barriers, phagocytes, NK cells, complement, and the cytokines that connect them. How each part contributes...
Phagocytosis: Mechanism and Steps
The steps of phagocytosis, from chemotaxis and opsonin recognition to the respiratory burst that kills the microbe, and what happens when it fails (chronic granulomatous disease)....
Innate vs Adaptive Immunity: The Fast General Defense and the Slow Specific One
Innate vs adaptive (acquired) immunity compared point by point: speed, specificity, memory, and how the two systems work as partners rather than rivals. Full comparison table, the...
The Complement System: How Three Pathways Reach One Killing Blow, and How the Body Keeps It in Check
The complement system explained by mechanism: how the classical, alternative, and lectin pathways all converge on C3, why C3 is the hub of the whole system, how the membrane attack...
Cytokines: The Immune System's Messages, and the Four Properties That Make Them Confusing
Cytokines explained by mechanism: what they are, the main families (interleukins, interferons, TNF, chemokines, CSFs, TGF), and the four properties (pleiotropy, redundancy, synergy...