A 384-well plate is a laboratory tool used for high-throughput screening and experiments. It consists of 384 small wells arranged in a grid format, allowing researchers to conduct multiple tests simultaneously. Each well can hold a small volume of liquid, making it efficient for experiments that require minimal sample sizes. These plates are commonly made from materials like polystyrene and are often used in fields such as biotechnology, pharmaceutical research, and molecular biology. The design facilitates automated liquid handling and analysis, making it easier to test various conditions or compounds in parallel.