Principle purpose of this lecture is to present on Leucocytes White Blood Cell. White Blood cells are also known as Leucocytes as they are colorless due to lack of Haemoglobin. There are about 6000-8000mm of WBC for 1ml of blood. These are also called Scavengers & Microscopic policemen. Here briefly describe type of White Blood Cell’s. They are: Neutrophils; Eosinophils and Basophils. Finally present on Formation of White Blood Cell.