A 6 year old boy is brought to the hospital for a 3rd episode of sore throat in 1 month. He is found bleeding from gums and nose and has pale conjunctiva. What’s the single cell type?

The key is D. Blast cells. [Diagnosis is ALL. Following points favours the diagnosis of ALL: : i) Age-6yrs ii) recurrent infection (sorethroat) due to neutrpenia and abnormal lymphoblasts which cannot protect from infection iii) thrombocytopenia causing gum and nose bleeding. Iii) anaemia (pale conjunctiva) due to reduced red cell production from marrow occupation by blast cells. It cannot be confirmed unless we do bone marrow aspiration.]