A type of white blood cell involved in the immune response

Leucocyte as a general term for immune system cells

प्रतिरक्षा तंत्र की कोशिकाएं

English Usage: "Different types of leucocytes perform various functions in the body's defense system."

Hindi Usage: "विभिन्न प्रकार के ल्यूकोसाइट शरीर की रक्षा प्रणाली में विभिन्न कार्य करते हैं।"