A simple method for electronic counting of rosette forming human blood lymphocytes

Area of Science:

• Immunology
• Hematology
• Biomedical Engineering

Background:

• Quantifying E rosette forming human blood lymphocytes is crucial for immunological assessments.
• Traditional visual counting methods can be time-consuming and prone to variability.
• Electronic cell counters offer potential for automated and high-throughput analysis.

Purpose of the Study:

• To evaluate the efficacy of a standard electronic laboratory cell counter for quantifying human E rosette forming lymphocytes.
• To assess the feasibility of using this method across healthy donors and patients with lymphoma and chronic lymphocytic leukemia (CLL).

Main Methods:

• Utilized a standard electronic cell counter with adjustable discriminator and sensitivity settings.
• Employed a previously established procedure for rosette specimen preparation and electronic counting.
• Developed a rapid, graphical method for determining rosette frequency and applied corrections for discrepancies.

Main Results:

• The electronic counter successfully distinguished lower E rosette levels in chronic lymphocytic leukemia (CLL) patients compared to healthy donors and lymphoma patients.
• Good agreement was observed between electronic and visual counting methods.
• Initial discrepancies in high rosette frequency samples were resolved through discriminator level adjustments and a correction procedure for double rosettes.

Conclusions:

• Standard electronic laboratory cell counters are suitable for accurately quantifying human rosette forming blood lymphocytes.
• The method demonstrates high precision and large capacity, making it valuable for screening numerous samples.
• This approach offers an efficient alternative to manual counting for immunological studies.