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B cell and T cell responses.Write the numbers 1-5 next to the activities below to show the order in which they occur.?

User Yiorgos
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Final answer:

T cell-dependent B cell activation is a multi-step process essential for adaptive immunity. B cells must first engage with an antigen, present it, encounter a helper T cell, receive cytokine signals, and then differentiate into antibody-producing plasma cells. Antibody class switching allows B cells to produce different types of antibodies to better combat various pathogens.

Step-by-step explanation:

B Cell and T Cell Responses

The process of T cell-dependent activation of B cells is crucial for adaptive immunity and occurs in a series of steps:

  1. A B cell encounters and engulfs a matching antigen.
  2. The B cell processes and presents fragments of the antigen on its surface.
  3. A helper T cell binds to the B cell at the antigen site.
  4. Cytokines are released by the helper T cell, signalling the B cell.
  5. The signalled B cell develops into a plasma cell capable of producing antibodies.

Antibody class switching is a process where a B cell changes the class of antibody it produces. This is important for the immune system to adapt and effectively combat different types of pathogens. Plasma cells derived from B cells secrete antibodies that are specific to the antigens they have encountered.

Effective immune responses rely on the collaboration between B cells and T cells where the adaptive immune system is instrumental in identifying and eliminating specific pathogens.

User Lensflare
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