Eosinophil granulocytes ( Eosinophils)
are white blood cells and one of the immune system components responsible for combating multicellular parasites and certain infections. Along with mast cells, they also control mechanisms associated with allergy and asthma. Usually present in the circulation in very low numbers.
Epidemiology
The science of studying the occurrence of disease in populations and relating this to genetic and/or environmental causes.
Erythroleukaemia
A rare cancer of the blood affecting immature red blood cells. This is a subtype of acute myeloid leukaemia.