Which cell types have the ability to present antigens to immune cells?

Dendritic cells, macrophages, and B cells are the principal antigen-presenting cells for T cells, whereas follicular dendritic cells are the main antigen-presenting cells for B cells. The immune system contains three types of antigen-presenting cells, i.e., macrophages, dendritic cells, and B cells.

What cells can present antigen?

They are found in a variety of tissue types. Professional antigen-presenting cells, including macrophages, B cells and dendritic cells, present foreign antigens to helper T cells, while virus-infected cells (or cancer cells) can present antigens originating inside the cell to cytotoxic T cells.

Which immune cells are antigens?

Lymphocytes are one of the main types of immune cells. Lymphocytes are divided mainly into B and T cells. B lymphocytes produce antibodies – proteins (gamma globulins) that recognize foreign substances (antigen) and attach themselves to them. B lymphocytes (or B cells) are each programmed to make one specific antibody.

Which cells are part of the specific immune system?

The cells of the immune system can be categorized as lymphocytes (T-cells, B-cells and NK cells), neutrophils, and monocytes/macrophages. These are all types of white blood cells. The major proteins of the immune system are predominantly signaling proteins (often called cytokines), antibodies, and complement proteins.

Are epithelial cells antigen-presenting cells?

Renal tubular epithelial cells (TEC) have the capacity to function as antigen-presenting cells (APC). The processing of native antigen and the presentation of peptides bound to major histocompatibility complex (MHC) class II products on TEC results in engagement of the T cell antigen receptor (TCR).

What makes a cell an antigen presenting cell?

Antigen-presenting cells (APCs) are a heterogeneous group of immune cells that mediate the cellular immune response by processing and presenting antigens for recognition by certain lymphocytes such as T cells. Classical APCs include dendritic cells, macrophages, Langerhans cells and B cells.

What is antigen-specific immunity?

Antigen-specific immunity develops through a series of intercellular information exchanges organized around cognate T cell receptor-peptide/MHC interactions. Here, we discuss these complex molecularevents andtheircellularconsequences in a serial synapsis model of adaptive immunity.

How do B cells react to antigens?

B cells react to antigens by producing antibodies; these antibodies then neutralize different pathogens. The cytotoxic T cells recognize antigens on cells and thereby kills them.