If you're shooting a university's graduation, then odds are that most of the people in attendance are from out of town and plan to leave soon. In addition to the camera, tripod and flash, you should also have a great photo printer so that you can deliver the goods on the same day.
Polymerase chain reaction. Polymerase chain reaction, (PCR), a technique used to make numerous copies of a specific segment of DNA quickly and accurately.
Polymerase Chain Reaction (PCR) is a very effective technique of obtaining multiple identical copies of a certain DNA strand (amplifying DNA). PCR can be used for amplifying DNA, mutation DNA, delete DNA, and introduce restriction endonuclease site. PCR is performed by repeating a cycle that consists of several steps.