A 17-year-old boy presented with TLC of 138 x 109/ L with 80% blasts on the peripheral smear. Chest X-ray demosnstrated a large mediastinal mass. Immunophenotyping of this patient&;s blasts would most likely demonstrate -
The cluster of differentiation (also known ascluster of designation or classification determinant and often abbreted as CD) is a protocol used for the identification and investigation of cell surface molecules providing targets for immunophenotyping of cells.
No surface antigens (null phenotype)
An immature T cell phenotype (Tdt/D34/CD7 positive)
Myeloid markers, such as CD 13, CD33 and CD 15
B cell markers, such as CD 19, CD20 and CD22
Haematology