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Zebrafish Kidney Phagocytes Utilize Macropinocytosis And Ca+-Dependent Endocytic Mechanisms., Claudia Hohn, Sang-Ryul Lee, Lesya M. Pinchuk, Lora Petrie-Hanson

College of Veterinary Medicine Publications and Scholarship

BACKGROUND: The innate immune response constitutes the first line of defense against invading pathogens and consists of a variety of immune defense mechanisms including active endocytosis by macrophages and granulocytes. Endocytosis can be used as a reliable measure of selective and non-selective mechanisms of antigen uptake in the early phase of an immune response. Numerous assays have been developed to measure this response in a variety of mammalian and fish species. The small size of the zebrafish has prevented the large-scale collection of monocytes/macrophages and granulocytes for these endocytic assays. METHODOLOGY/PRINCIPAL FINDINGS: Pooled zebrafish kidney hematopoietic tissues were used as …