论文部分内容阅读
Granulocytes are a category of white blood cells characterized by the presence of lobulated nuclei and secretory granules in their cytoplasm.Blood-circulating granuloeytes comprise mainly neutrophils,basophils and eosinophils,and mast cell granulocytes are mainly in close contact with the host-environment mucosa interface.Granuloeytes play crucial roles in combating invading pathogens.