Answer:
<em>Well, Cells of the immune system not only use lymphatic vessels to make their way and T cells mature in the thymus, they both initially develop from bone marrow. B cells are immune cells that function primarily by producing antibodies. structure on the surface of a pathogen that binds to T or B lymphocyte antigen receptors. Hope That Helps!</em>
<em>From Itsbrazts.</em>
Answer:
The correct answer is D. proliferation and differentiation.
Explanation:
Primary immune response occurs due to the first exposure of an antigen to the immune system. The primary immune response is generally delayed by many days because it takes time for B and T cells to become cloned and to proliferate and differentiate.
Then after several days of proliferation and differentiation of activated T and B cells, T cells become effector T cells and B cell becomes plasma cells which then eliminates the antigen. Memory B and T cells are also produced during this process which helps in generating a quick immune response during the second and subsequent exposure of that antigen.
So the correct answer is D. proliferation and differentiation.
A compound that has Carbon and Hydrogen
Answer: (c) skeleton
Explanation: The musculoskeletal system is made up of the body's bones (the skeleton), muscles, cartilage, tendons, ligaments, joints, and other connective tissue that supports and binds tissues and organs together.