Immune response
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An immune response is a physiological reaction which occurs within an organism in the context of inflammation for the purpose of defending against exogenous factors. These include a wide variety of di
Macrophages and helper T cells
T cell
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T cells are an important part of the immune system and play a central role in the adaptive immune response. T cells can be distinguished from other lymphocytes by the presence of a T-cell receptor on
Immune response
…against specific antigens and thus, it takes longer to activate the components involved. The adaptive branch include cells such as dendritic cells, T cell, and B cells as well as antibodies—also known as immunoglobulins—which directly interact with antigen and are a very important component for a strong…
Scanning electron micrograph of a red blood cell (left), a platelet (center), and a T lymphocyte (right); colorized
HIV-infected T cell
Depiction of the various key subsets of CD4-positive T cells with corresponding associated cytokines and transcription factors.