Since cells are the smallest of all living organisms, scientists have had to develop various methods and tools to examine and research them. In the 17th century, the microscope was invented, allowing researchers a glimpse at the cell. Today, supercomputers put cells and experiments to the test. In microbiology laboratories and cancer research centers, well-trained, dedicated scientists work to explore the science of cells, making biotechnology a continuously growing field. In this book, learn how the first discovery of cells led to the first cloned mammal and additional scientific advancements.