What is chronic leukaemia?

Leukaemia literally means ‘many white cells in the blood'. The white cells are part of the body’s immune system, and there are several sub-groups of white cells that have different sorts of roles in recognising and dealing with ‘invaders’ such as bacteria and viruses as well as other types of foreign protein

read more at http://www.netdoctor.co.uk/diseases/facts/leukaemiachronic.htm