Comprising neutrophils, eosinophils and basophils, granulocytes are granule-filled white blood cells that are part of the innate immune system. They have a primary function of responding to tissue damage and foreign particles.
Tissue-resident immune cells involved in tissue maintenance. The many functions of macrophages include detection of tissue damage or pathogens, efferocytosis (clearance of dying or dead cells), phagocytosis of tissue debris and foreign particles, and regulation of inflammation.
Natural killer cells are lymphoid cells (related to B and T cells) that are an important part of the innate immune system. A primary function of these cells are to target stressed cells, such as virus-infected or tumour cells
Pericytes are an abundant cell type intimately associated with the microvasculature (capillaries) of tissues. They play multiple roles including formation and maintenance of blood vessels and regulation of inflammation.