Real‑Time PCR: A 30‑Year Journey of Innovation

The invention of real‑time PCR transformed how scientists measure DNA. Three decades ago, researchers checked amplified samples only after the reaction finished, using gels and visual scans. That method was slow and gave shaky results, making it hard to run many tests at once. A special anniversary edition of a science journal asked two pioneers to tell their story. Russell Higuchi explained how he moved from a simple detection method to watching fluorescence grow in real time. He worked first at Cetus and later at Roche, turning ideas into working experiments. Lincoln McBride joined the narrative to show how the ABI 7700 machine was built.

This device could read many samples quickly and made real‑time PCR practical for labs worldwide. Their combined accounts reveal how chemistry, optics, software and business decisions intertwined. They faced doubts about the technology’s reliability and had to convince companies that it would sell. The ABI 7700 became a staple in research labs. When COVID‑19 hit, scientists everywhere relied on real‑time PCR to test for the virus. That global use highlighted how early design choices still shape today’s diagnostics. The memoirs include original papers and notes, giving readers a behind‑the‑scenes look. They show that perseverance in research and smart engineering can turn a simple idea into a worldwide tool.

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