The annual cytometry conference cum workshop held under the aegis of ‘The Cytometry Society of India’ (TCS), is a unique amalgamation of scientists and researchers involved in flowcytometry, that gives a wonderful opportunity to share their experiences and expertise and discuss latest advancements in the field. TCS-2021 is being organized online by the Postgraduate Institute of Medical Education & Research (PGIMER) Chandigarh,with an intent to cover various aspects of basic, clinical and advanced flowcytometry from renowned international and national experts and encourages active participation from all flow cytometry enthusiasts.