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The business cycle is the
Epithelial Surfaces
Layers of cells that line the body’s surfaces and cavities, providing protection, secretion, and absorption functions.
Antigen Presenting Cells
Cells that display foreign antigens complexed with major histocompatibility complex molecules on their surfaces.
Progenitor
An ancestor or parent in a direct line of descent, or a cell that has the capacity to differentiate into a specific type of cell.
Plasma Cell
Cell that secretes antibodies; a differentiated B lymphocyte (B cell).
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