Haematological diseases, anaemia, clotting and normal development and function of platelets and erythrocytes

Not all haemopoietic cells or 'blood cells' are erythrocytes. This term is often used to encompass lymphocytes, macrophages, granulocytes and other white cell types. Check the context of the research eg if the research relates to leukaemia it will be referring to lymphocytes etc and not to erythrocytes and therefore should not be coded as Blood.