What is the composition blood leukocytes?

Blood leukocytes, or white blood cells, are primarily composed of five main types: neutrophils, lymphocytes, monocytes, eosinophils, and basophils. Neutrophils are the most abundant, playing a key role in fighting infections. Lymphocytes are crucial for adaptive immunity, while monocytes differentiate into macrophages and dendritic cells to assist in immune responses. Eosinophils and basophils are involved in allergic reactions and combating parasitic infections.