What are the three types of innate immunity?

What are the three types of innate immunity?

Based on emerging knowledge on the different effector T-cell and innate lymphoid cell (ILC) lineages, it is clear that the innate and adaptive immune systems converge into 3 major kinds of cell-mediated effector immunity, which we propose to categorize as type 1, type 2, and type 3.

What are the two main types of immunity?

There are two types of immunity: active and passive.

What is Type 1 and Type 2 immunity?

Type 1 immunity is critical for defence against many intracellular pathogens, bacteria, viruses and other microorganisms. By contrast, type 2 immunity promotes immunity against extracellular parasites and helminths, helps to maintain metabolic homeostasis and regulates tissue repair following injury.

What are the major types of immunity?

Humans have three types of immunity — innate, adaptive, and passive:
  • Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection. ...
  • Adaptive immunity: Adaptive (or active) immunity develops throughout our lives.

What is a Type 2 immune response?

In this traditional view, the type 2 response is categorized as an adaptive immune response with differentiated T helper cells taking center stage, driving eosinophil recruitment and immunoglobulin production via the secretion of a distinct repertoire of cytokines that include interleukin-4 (IL-4), IL-5, and IL-13.

What is a Type 1 immune response?

Type I hypersensitivity is the most common type of hypersensitivity reaction. It is an allergic reaction provoked by re-exposure to a specific type of antigen, referred to as an allergen. Unlike the normal immune response, the type I hypersensitivity response is characterized by the secretion of IgE by plasma cells.