Dictionary > Memory T cell

Memory T cell

Definition
noun, plural: memory T cells
A long-lived T cell that bears receptors for an antigen during its encounter with a prior infection or vaccination
Supplement
In mammals, the T lymphocytes (also called T cells) form in the bone marrow and attains maturity in the thymus. There are different types of T lymphocytes and one of them is memory T cell.
A memory T cell, compared with other T lymphocytes, lives relatively longer. It can recognize pathogens, such as bacteria and viruses, and cancer cells. The receptors on its cell surface enables an immune response against these foreign particles. The cell got its name memory from its ability to recognize the same foreign particle through its receptors. Recognizing the pathogen previously encountered during re-exposure, the memory T cells produce clones immediately and as such respond to the infection more strongly.
A memory T cell is different from a memory B cell. Apart from the lineage from where they were derived, the memory B cell produces large amounts of antibodies during re-exposure to the same antigen whereas the memory T cell does not. Both of them, though, are capable of proliferating to produce clones during re-exposure to a particular antigen.
See also:


You will also like...

Lotic community of algal species
Lotic Communities & Algae

Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

Human Reproduction
Human Reproduction

Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

Neural Control Mechanisms
Neural Control Mechanisms

Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..

Mātauranga Māori and Science Collaboration
Mātauranga Māori and Science

Mātauranga Māori is the living knowledge system of the indigenous people of New Zealand, including the relationships t..

Angle Oak Tree
Seed Plants

Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

Endemic Flora of New Zealand
New Zealand’s Unique Flora

If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..