DNA Damage and Cell Viability Assays for Beginners

Understanding how cells survive stress and how their genetic material sustains damage is fundamental to modern biomedical research, pharmacology, and toxicology. This text-based course provides a clear, step-by-step introduction to the core laboratory techniques used to measure cell viability and DNA integrity. You will transition from learning basic cellular concepts to confidently understanding how to plan and interpret critical laboratory assays. What you'll learn: - Understand the core biological mechanisms behind cell death, survival, and DNA damage. - Master the principles and step-by-step procedures of the Trypan Blue dye exclusion assay. - Explain the chemical basis and protocol of the MTT assay for assessing metabolic activity. - Describe how the Comet assay detects and quantifies single- and double-strand DNA breaks. - Analyze the mechanics of the TUNEL assay for identifying apoptotic cell death. - Apply best practices for experimental design, controls, and troubleshooting in the lab. This course begins with essential definitions and foundational concepts of cell biology, ensuring you have the necessary background before diving into specific experimental protocols. You will then explore each major assay through detailed written explanations, comparative analysis, and practical troubleshooting scenarios. This course is designed for undergraduate students, entry-level lab technicians, and aspiring researchers who are new to molecular biology and cell culture techniques. No prior laboratory experience is required to begin. Start reading today to build a strong theoretical foundation in cellular and genetic assay methodologies.