Automated counting of T cell rosettes

Area of Science:

• Immunology
• Cell Biology
• Biomedical Engineering

Background:

• Human T cell rosettes are important for immune function.
• Traditional methods for enumerating T cell rosettes rely on microscopy, which is time-consuming and subjective.
• There is a need for more efficient and objective methods for T cell rosette quantification.

Purpose of the Study:

• To evaluate the efficacy of an automated particle counter, the Bio/Physics Cytograf 6300A, for enumerating human T cell rosettes.
• To compare the performance of automated enumeration with traditional microscopic techniques.

Main Methods:

• Human T cell rosettes were prepared from volunteer samples.
• Enumeration was performed using the Bio/Physics Cytograf 6300A, which analyzes particle absorbance and scatter from a laser beam.
• Results were compared with those obtained from standard microscopic analysis.

Main Results:

• The Cytograf 6300A demonstrated high reproducibility in repeated samplings of rosette preparations.
• Automated enumeration showed a high degree of correlation with microscopic analysis when comparing T cell rosettes from 27 volunteers.
• The automated method can quantify significantly more cells, offering at least 100 times the capacity of microscopic techniques.

Conclusions:

• The Bio/Physics Cytograf 6300A provides a reproducible and objective method for enumerating human T cell rosettes.
• Automated T cell rosette counting is a superior alternative to microscopy, offering increased efficiency and accuracy.