<prompt> Flow cytometry is used toAntibody response T lymphocytesSeparate blood cells from whole bloodDistinguish between leukocytesTo get differential leukocyte count  <response>: Flow cytometry:These include B- and T-cell lymphomas and leukemias, as well as myeloid neoplasms. An advantage of flow cytometry over immunohistochemistry is that multiple antigens CD molecule can be assessed. Also PNH is diagnosed by flow cytometry, which provides a sensitive means for detecting red cells that are deficient in GPI-linked proteins such as CD59. 