Cell culture models involve culturing cells in a laboratory setting to study biological processes, drug responses, or disease mechanisms. Researchers use cell culture models to mimic the behavior and responses of cells in vivo, allowing for controlled experiments and observations. These models can be used to test the effects of drugs, chemicals, pathogens, and other factors on cells, as well as to study cell signaling pathways and cellular interactions. Cell culture models are essential tools in cell biology, pharmacology, toxicology, and disease research.