Monocytes: are the largest type of leukocytes. 1. Leave the circulation, enter tissues, enlarge and transformed into macrophages which are important in late stages of infection. 2 Produce chemicals such as prostaglandins, interferons and complement that are important in immune system response. 3. Macrophages are given specific names such as dust cells in lungs and kupffer cells in liver.
Lymphocytes:. are the smallest leukocytes.
2. Types are: T-lymphocyte. 2. B-lymphocytes which differentiated into plasma cells that produce antibodies or immunoglobulins (Igs). These antibodies responsible for destroying foreign antigens. 3. Natural killer cells.