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Cancer cells express PD-L1 (orange) proteins on their surface to trick the immune system. The interaction of PD-L1 with PD-1 of T-cells leads to a down-regulation of T-cells. The antibody (yellow) blocks this interaction.

Innate immunity. Adaptive specific . Phagocytosis. Infographics. vector illustration

Innate immunity. Adaptive specific . Phagocytosis. Infographics. vector

BARCELONA, SPAIN - MARCH 1, 2022: The photography section within the Museum d'Historia de Catalunya located in the building Palau de Mar (1880-1890), originally General Port Warehouse, a 19th-century.

The T-cell receptor activates the immune response to antigens in T-lymphocytes. T-cell receptors (dark blue), CD4 molecules (light blue), glycolipids (orange). 3d rendering. Illustration

Dendritic cells present antigens (green) to lymphocytes through their membran bound MHC-molecules (violet). CD4 molecules (light blue) bind to other portions of the MHC, strengthening the interaction.

3d computer illustration of a dendritic cell. They areantigen-presenting cells of the immune system. Their main function is to process antigen material and present it on the cell surface to the T cells of the immune system. They are messengers betwe

3D medical illustration cytotoxic T cell and Helper T cell destroys the stress-related molecule

Human Antigene and bacteria

T-cell receptor in complex with the MHC class II-peptide complex. The antigen (light green) is a peptide from a tumor cell, bacteria or virus. Different stages of the interaction. 3D-Rendering. Illustration

vector illustration of mechanisms of microbial cell resistance to antibiotics

HLA - Human Leukocyte Antigen acronym

HLA - Human Leukocyte Antigen acronym, medical concept background

Human Cytotoxic T cell

Human Cytotoxic T cell

Immunologically active proteins on a T-cell. TCR (blue), CD-4 (light blue), CD-28 (dark blue), PD-1 (magenta), CTLA-4 (violet), Ca-channel (dark violet). The T-cell receptor, CD-4 and CD-28 activate T-cells, while PD-1 and CTLA-4 inhibit the activat

Macrophages approaching bacteria (bacilli), 3D rendering. Illustration

T-cell receptor in complex with the MHC class II-peptide complex. The antigen (light green) is a peptide from a tumor cell, bacteria or virus. Complex embedded in the membranes. 3D-Rendering. Illustration

Lymphocyte. Immune cell. Antibody-producing cell. B-lymphocyte o

B cell activation pathway showing naive B cell, helper T cell, and antibodies, antigen signals drive clonal expansion to memory and plasma cells. Outline diagram

Cytotoxic cells. Cytokines. Cell immunity. Infographics. Vector illustration

B cell activation process. Humoral immunity. T cell-dependent activation. Adaptive immunity. Vector illustration. Medical poster. Schematic diagram

T-cell receptor in complex with the MHC class II-peptide complex. The antigen (light green) is a peptide from a tumor cell, bacteria or virus. Different stages of the interaction. 3D-Rendering. Illustration

Human Cytotoxic T cell

Innate immunity. Adaptive specific . Phagocytosis. Infographics. vector illustration

T-cell receptor bound to a cell membrane

T-cell dependent b-cell activation. B lymphocyte binds an antigen, receive help from a T helper, and differentiate into a plasma cell that secretes of antibodies. Receptors on surface of white blood cells. Human immune system. Vector poster

vector illustration of mechanisms of microbial cell resistance to antibiotics

BARCELONA, SPAIN - MARCH 1, 2022: Museu d'Historia de Catalunya located in the building Palau de Mar (1880-1890), originally General Port Warehouse, a 19th-century warehouse in front of the harbor.

T-cell receptor in complex with the MHC class II-peptide complex. The antigen (light green) is a peptide from a tumor cell, bacteria or virus. Different stages of the interaction. 3D-Rendering. Illustration

Human Cytotoxic T cell

PD-1 (red) extends from the surface of a T-cell and interacts with the ligand protein PD-L1 (yellow) from a antigen presenting cell. Although the T-cell has been activated through the interaction of a T-cell receptor (blue) and a MHC protein (viole

Lymphocyte B and T-cell. Cells of immune system (immune response). Vector illustration on white background. Didatic illustration.

HLA - Human Leukocyte Antigen acronym, medical concept background

3D medical illustration cytotoxic T cell and Helper T cell destroys the stress-related molecule

T-lymphocytes and dendritic cells, 3D-rendering; Dendritic cells are antigen-presenting cells of the immune system. They process antigen material and present it on the cell surface to the T-cells. Illustration

Activation of T-cell leukocytes

Inflammation of the lymph nodes. Infographics. Vector illustration on isolated background

Blue leukocyte in Knee Joint Aspiration sample.

Human Cytotoxic T cell

Interactions of MHC-II with the T-cell receptor and CD4 and B7-1 with CD-28 activates T-cells while the interactions of P7-1 with CTLA-4 and PD-L1 with PD-1 deactivates T-cells.

Macrophag engulfing bacteria (cocci), 3D rendering. Macrophages engulf and digest cellular debris and pathogens. - Illustration

Cell-Mediated Immunity from antigen presentation to cytotoxic response and Memory T Cell formation. Adaptive immunity. Vector illustration. Medical poster. Schematic diagram

T and B Cell binding to elicit a response to a T cell-dependent antigen, the B and T cells must come close together. B cell must receive two signals from the native antigen and the T cells cytokines

Makrophage, type of white blood cell, of the immune system, that engulfs and digests cellular debris, foreign substances, microbes, cancer cells

Natural Killer cell. NK cell receptors. Structure and anatomy of large granular lymphocytes (LGL). Human Immune system. Part of Innate immunity. Vector poster

3D Isometric Flat Vector Conceptual Illustration of Phagocytosis, Labeled endocytosis Educational Scheme

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