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Isolation of bovine mammary lymphocytes for fluorescent activated flow cytometry
T L Ebling1, L K Fox, K M Byrne
1Washington State University, Department of Animal Sciences, Pullman, WA, USA.
Insights
This study details a method to isolate T lymphocytes from cow mammary secretions for flow cytometry analysis. This technique allows for the quantification of specific T lymphocyte subpopulations in mammary secretions.
Area of Science:
- Veterinary Immunology
- Cellular Immunology
- Bovine Health
Background:
- T lymphocytes play a crucial role in mammary gland immune responses.
- Understanding T lymphocyte populations in secretions is vital for assessing udder health.
- Current methods for isolating lymphocytes from bovine mammary secretions are limited.
Purpose of the Study:
- To develop and describe a detailed methodology for isolating T lymphocytes from bovine mammary gland secretions.
- To enable accurate quantification of T lymphocyte subpopulations using flow cytometry.
- To provide a reliable method for immunological studies of the bovine mammary gland.
Main Methods:
- Collection and centrifugation of mammary gland secretions to isolate leukocytes.
- Purification of leukocytes using density gradient centrifugation.
- Tri-color fluorescent staining with monoclonal and secondary antibodies for T lymphocyte identification.
- Flow cytometry for quantifying cellular subpopulations.
- Statistical analysis using CELLQuest and SAS software.
Main Results:
- A robust protocol for isolating viable T lymphocytes from bovine mammary secretions was established.
- The methodology allows for the differentiation and quantification of T lymphocyte subsets.
- The technique is suitable for detailed immunological analysis of mammary secretions.
Conclusions:
- The described methodology provides an effective means to study T lymphocytes in bovine mammary secretions.
- This technique facilitates further research into mammary gland immunity and disease.
- Accurate enumeration of lymphocyte subpopulations can aid in diagnosing and managing bovine mammary health.
Abstract:
A detailed methodology is described for the isolation of T lymphocytes from bovine mammary gland secretions for flow cytometry. Mammary gland secretions are collected and centrifuged to separate the leukocytes from the mammary supernatant. The leukocytes are purified using a density gradient and diluted for fluorescent staining. Using tri-color fluorescent staining, the T lymphocytes are identified by monoclonal antibodies and stained with secondary antibodies. Flow cytometry is used to quantify the cellular subpopulations of the T lymphocytes. Proportional and statistical analysis of the flow cytometric data is conducted with computer software, CELLQuest and SAS.
