Which cell has functions of both phagocytosis and professional antigen presentation ( ) A: neutrophils B: macrophages C: dendritic cells D: NK cells

Which of the following cells constitutively express MHC class II molecules? ( ) A: macrophage B: dendritic cell C: Langerhans cell D: B cell E: thymic epithelial cell

Pus formation largely results from the accumulation of the remains of dead and dying <br/>________. A: neutrophils B: macrophages C: epithelial cells D: sentinel dendritic cells E: red blood cells and platelets

In the thymus, thymic stromal cells(TSCs) are interconnected into a network structure. These cells carry a large number of surface molecules and can secrete a variety of thymic hormones and cytokines, which provides a suitable microenvironment for the development and maturation of thymocytes. The types of TSCs include ( ). A: epithelial cell B: macrophage C: dendritic cell D: neutrophil