Which scientific product design innovation from the 1960s revolutionized DNA research by allowing scientists to amplify specific DNA segments millions of times in just hours?

Scientific instruments have evolved dramatically over the centuries, with design improvements that transformed how research is conducted. This poll tests your knowledge about a revolutionary product design innovation that changed the scientific landscape and made a specific type of research more accessible and reliable. Consider how product design in scientific equipment has influenced the advancement of knowledge and discovery.

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Polymerase Chain Reaction (PCR) machine
Scanning Electron Microscope (SEM)
High-Performance Liquid Chromatography (HPLC)
Nuclear Magnetic Resonance (NMR) spectrometer