Biological materials are substances that come from living organisms. These materials can include cells, tissues, organs, and fluids, such as blood or saliva. They are essential for various scientific studies, including biomedical research, genetics, and pharmacology, as they help scientists understand how living systems function. In addition to natural biological materials, there are also synthetic versions created in laboratories. These can include biopolymers and tissue-engineered products, which mimic the properties of natural materials. Both natural and synthetic biological materials play crucial roles in developing new medical treatments and technologies.