CD34 and acute myeloid leukemia: Singh et al., for example, have explored CE coupled with polymerase chain reaction-amplified immunoassay (I-PCR) for the simultaneous detection of multiple surface proteins (CD9, CD34, CD63, CD123, c-Kit/CD117, FLT-3/CD135) in EVs from acute myeloid leukaemia (AML) (Fig. 9a) [155].