Definition

Noun: * Innate immunity: The body's first line of defense against pathogens, present from birth and not specific to any particular pathogen. It provides immediate, general protection through physical barriers (like skin), chemical barriers (like stomach acid), and immune cells that attack foreign invaders broadly.

Usage

This term is used in biology, medicine, and immunology to describe the non-specific, inherited defense mechanisms of an organism. * Innate immunity is crucial for preventing infections before they can establish themselves. * A study focused on how innate immunity responds to viral threats. * Unlike adaptive immunity, innate immunity does not have memory of past infections.

Advanced Usage

• "To trigger innate immunity": To activate these non-specific defense mechanisms.
  • The presence of bacterial cell wall components can trigger innate immunity.
• "Components of innate immunity": Refers to the specific parts of this system, such as phagocytes, natural killer cells, and antimicrobial proteins.
  • Macrophages are key components of innate immunity.

Variants and Related Words

• Natural immunity: Often used synonymously with innate immunity, though it can sometimes refer to immunity acquired from a previous infection.
• Innate immune system: The broader system encompassing all the cells and mechanisms of innate immunity.
• Non-specific immunity: A descriptive term highlighting that the response is not tailored to a specific pathogen.

Synonyms

• Natural defense system
• Non-specific defense
• Constitutional immunity

Related Phrases

• Barrier immunity: A subset of innate immunity referring specifically to physical and chemical barriers like the skin and mucous membranes.
• Inflammatory response: A major component of innate immunity where tissues react to injury or infection.

Related Concepts (Not Idioms or Phrasal Verbs)

• Adaptive immunity: The contrasting, specific immune response that develops after exposure to a pathogen and has memory.
• Phagocytosis: The process by which cells of the innate immune system (e.g., macrophages) engulf and destroy pathogens.

Noun

1. immunity to disease that occurs as part of an individual's natural biologic makeup