Figure 2. (A–G) Multiparameter flow cytometry (MFC) scattergram of the peripheral blood showing the immunophenotype of the lymphoma cells (the population seen in royal blue in all plots and in red in the last plot) which are positive for CD45, CD3, CD5, CD4, and CD2 but in a dimmer expression than the normal T lymphocytes (bright green population). In addition, they are positive for TCR a/b and show aberrant loss of CD7 (last plot). CD10, CD19, and CD20 are negative. SS – side scatter; APC – allophycocyanin; FITC – fluorescein isothiocyanate; PE – phycoerythrin; PE-Cy7 – phycoerythrin-cyanin5; PerCP-Cy5 – peridinin chlorophyll protein complex-cyanine 5.