When specific immunity involves antibody production it is referred to as humoral immunity.

Humoral Immunity

Cellular immunity is the branch of our adaptive immunity that targets intracellular pathogens.

Cellular Immunity

There are two branches of the adaptive immune system:
- Humoral Immunity
- Cellular Immunity

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Adaptive immunity is defined by two important characteristics: specificity and memory. Specificity refers to the adaptive immune system’s ability to target specific pathogens, and memory refers to its ability to quickly respond to pathogens to which it has previously been exposed. These elements synergistically work with the innate response in order to completely control antigens.

Adaptive Immune Response

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- B-Cell Immunity in COVID-19
- T-Cell Immunity in COVID-19
Adaptive response process
- Blood brings the cells throughout the body as normal where the B cells are working alongside t cells to go into the plasma where they produce antibodies specific to the antigen.  
- A neutralizing antibody is efficient in fully blocking the virus from entering the host cells. This helps limit the infection and relapse. 
- The overall adaptive immune response is directed by helper T cells, and cytotoxic T cells play a vital role in the clearance and cleaning of viral-infected cells
- Adaptive immune response against coronavirus requires stimulation of B cell and T cell epitopes


Adaptive Immune Response to COVID-19

**Specificity** and **memory** are achieved by  programming certain cells in the immune response to respond rapidly to exposures of the pathogen. This programming occurs as a result of the first exposure to a pathogen or vaccine, which triggers a **primary response**.    

Primary Response of the Adaptive Immune System

Branches of the Adaptive Immune System

Adaptive immunity can be classified as either active or passive immunity.

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