Bland-Altman bias plots for immunophenotyping lymphocytes in blood and lymph node aspirates using the personal compared to the conventional flow cytometer. Difference versus average for cell percentages. Mean bias (central dot-line) and limits of agreement (upper and lower dotted lines). (A-C) % CD3+, % CD21+ and % CD3+ and % CD21+ in peripheral blood samples. (D-F) % CD3+, % CD21+, and % CD3+ and % CD21+ in lymph node aspirates. (G-I) % CD3+, % CD21+ and % CD3+ and % CD21+ in all peripheral blood and lymph node samples collectively.