What is the function of Phytohemagglutinin?

Phytohemagglutinin (PHA) is a lectin derived from the red kidney bean, commonly used in laboratory settings to stimulate cell division, particularly in lymphocytes. It binds to specific carbohydrates on cell surfaces, inducing mitosis and promoting activation of immune responses. PHA is also employed in various research applications, including immunology and cell Biology, to study cellular interactions and proliferation.