A child has monotonous blasts in the peripheral blood that have scant blue cytoplasm. They are cALLa (CD10) positive. Which form of acute lymphoblastic leukemia is most likely?
a. Immature B cell
b. Immature T cell
c. Mature B cell
d. Mature T cell
ANS: A
cALLa (CD10) is expressed on the surface of cells in immature B-cell acute lymphoblastic leukemia. This marker is not present on the other forms of acute lymphoblastic leukemia that are listed.
Health Professions
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