lymphocyte

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Human lymphocyte

Diagram of a typical T-cell antigen receptor showing its structure embedded in the T-cell membrane, with labeled alpha and beta chains, antigen-binding site, variable and constant domains, carbohydrates, hinge region, disulfide bond, and cytoplasm.

Clonal selection of a B cell

Immune stimulation by activated helper T cells

Sjögren syndrome

At a Glance

Human lymphocyte

lymphocyte summary

lymphocyte: Media

blood cell

Images

Human lymphocyte

Human lymphocyte

A phase-contrast microphotograph of a human lymphocyte.

Manfred Kage/Peter Arnold

Human T cell

Human T cell

A scanning electron micrograph of a T cell (T lymphocyte) from the immune system...

NIAID

Diagram of a typical T-cell antigen receptor showing its structure embedded in the T-cell membrane, with labeled alpha and beta chains, antigen-binding site, variable and constant domains, carbohydrates, hinge region, disulfide bond, and cytoplasm.

T-cell antigen receptor

The basic structure of a typical T-cell antigen receptor.

Encyclopædia Britannica, Inc.

Clonal selection of a B cell

Clonal selection of a B cell

Activated by the binding of an antigen to a specific matching receptor on its surface,...

Encyclopædia Britannica, Inc.

Immune stimulation by activated helper T cells

Immune stimulation by activated helper T cells

Stimulation of immune response by activated helper T cells. Activated by complex...

Encyclopædia Britannica, Inc.

plasma cell

plasma cell

A plasma cell (B) releases antibodies that circulate in the blood and lymph, where...

Uniformed Services University of the Health Sciences (USUHS)

Sjögren syndrome

Sjögren syndrome

Histopathologic image showing the infiltration of lymphocytes in the minor salivary...

KGH

celiac disease

celiac disease

Biopsy of a small intestine showing celiac disease, characterized by flattening of...

Samir

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