TY - CHAP M1 - Book, Section TI - Phagocytic Disorder A1 - Lau, Yu-Lung A1 - Lee, Pamela A2 - Stevenson, David K. A2 - Cohen, Ronald S. A2 - Sunshine, Philip Y1 - 2015 N1 - T2 - Neonatology: Clinical Practice and Procedures AB - Phagocytosis is the process by which leukocytes internalize particles larger than 1 μm, such as microbes, apoptotic cells, and chemical substances.1 It is an essential component of the innate and adaptive immune response, as well as tissue remodeling and repair.2 Neutrophils, macrophages, and dendritic cells are professional phagocytes that are derived from the common myeloid progenitor.3 As the invading microbes cross the skin and mucosal barrier and enter the tissue, they are recognized by resident macrophages and dendritic cells through germline-encoded pattern recognition receptors. The release of proinflammatory cytokines activates local endothelial and epithelial cells, which express chemoattractants and adhesion molecules. Circulating neutrophils adhere to the endothelium and migrate through the endothelial lining into the tissues.4, 5 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1109796020 ER -