A mouse model is a type of research tool used in scientific research to study various biological and medical phenomena, including diseases and drug development. These models involve genetically modified mice that mimic specific human diseases or conditions, allowing researchers to study the underlying mechanisms and test potential treatments in a controlled laboratory setting. Mouse models are highly valuable in biomedical research as they provide insights into the genetic and molecular basis of diseases and help in developing new therapies. They are widely used in fields such as cancer research, immunology, neuroscience, and pharmacology.