dna 増幅
Optical amplifiers are important in optical communication and laser physics they are used as optical repeaters in the long. An optical amplifier is a device that amplifies an optical signal directly without the need to first convert it to an electrical signal.
Polymerase chain reaction pcr is a method widely used to rapidly make millions to billions of copies complete copies or partial copies of a specific dna sample allowing scientists to take a very small sample of dna and amplify it or a part of it to a large enough amount to study in detail.

Dna 増幅.






























































































