Phagocytic cells, like macrophages, neutrophils, and dendritic cells, play vital roles in the immune system by engulfing and processing foreign particles. Macrophages perform phagocytosis, regulate the immune response, and aid in tissue repair. Neutrophils rapidly respond to infections and form extracellular traps, while dendritic cells activate T cells and migrate to lymph nodes. These cells contribute to both innate and adaptive immunity.

Mast cells, originating from bone marrow, mature in connective tissues to become fully functional. They contain granules with bioactive molecules and are strategically located in various tissues. While not granulocytes, they share similarities with basophils and play a vital role in allergic responses and immune defense, releasing histamine and other inflammatory mediators.

Granulocytes, a type of white blood cell, play key roles in the immune system. Neutrophils are effective at combating bacterial and fungal infections, while eosinophils target parasites and allergies. Basophils release chemicals that promote inflammation and allergic responses. Together, they provide rapid immune responses, each with specialized functions in combating different types of pathogens.