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.
A PCR or polymerase chain reaction is a laboratory procedure in which millions of copies of a specific piece of DNA are made. It is essentially an amplification method, whereby the tiniest amounts of DNA that may be present in blood, hair or tissues can be copied so that there is enough for analysis.he name of this method is derived from the key component involved that carries out the replication of the DNA, called a DNA polymerase. This is an enzyme that exists in nature. The most commonly used polymerase is Taq polymerase, which is obtained from the bacterium Thermus aquaticus.