Flow Cytometry in Pathology by Ephraim Imhotep Zulu - University of Zambia - School of Health Sciences - Cellular Pathology-unza

Description

This advanced lecture note on Flow Cytometry in Pathology provides a comprehensive overview of the technique for tertiary students in Biomedical Sciences, Histopathology, and Laboratory Medicine. Authored by Ephraim Imhotep Zulu, BSc BMS, MSc Path, from the Department of Biomedical Sciences at the University of Zambia's School of Health Sciences, the material explains the principle of flow cytometry as a method for rapidly analyzing the physical and chemical characteristics of individual cells or particles suspended in a fluid stream as they pass a laser beam. It details how fluorochrome-conjugated antibodies or DNA stoichiometric dyes are used to tag specific cellular components, with emitted light detected and converted into digital data displayed as dot plots or histograms. The note lists key fluorochromes like Propidium Iodide for DNA and FITC for antibodies, along with their excitation and emission wavelengths. It outlines suitable samples, including fine needle aspirates and effusion fluids, and covers major applications such as DNA ploidy analysis, cell cycle assessment, and immunophenotyping for diagnosing and classifying lymphoid neoplasms. A significant focus is on interpreting DNA histograms to identify diploid, aneuploid, and S-phase cell populations for prognostic evaluation in cancers like bladder and prostate carcinoma. The lecture compares flow cytometry with immunocytochemistry and discusses limitations, including the lack of morphological correlation, high instrument cost, and potential issues with scanty or admixed cell populations. This resource is essential for diploma and degree students to understand the clinical utility, technical execution, and analytical interpretation of flow cytometry in modern diagnostic pathology. Download this lecture to gain a thorough understanding of this powerful quantitative analytical tool.