👉 Receives and infection are interconnected processes in the context of immunology and infectious diseases. Receives, often referred to as antigen-presenting cells (APCs) like dendritic cells, macrophages, and B cells, capture and process pathogens or their components from an infected host. These APCs then present the processed antigens on their surface using major histocompatibility complex (MHC) molecules to T cells in the lymph nodes. This interaction is crucial for initiating an adaptive immune response. If the presented antigens are recognized as foreign by T cells, particularly CD4+ helper T cells or CD8+ cytotoxic T cells, it triggers a series of immune responses, including the activation of B cells to produce antibodies and the activation of cytotoxic T cells to destroy infected cells. In essence, the APCs act as the "receivers" that bridge the innate and adaptive immune systems, facilitating the body's defense against infections by effectively presenting pathogen-derived antigens to T cells, thereby initiating a targeted and specific immune response.
