Magnesium is anodized primarily as a primer for paint. The case had red lacquer sealant around the primer annulus. A primer () or undercoat is a preparatory coating put on materials before painting. The bulkier black powder fouling better disperses primer residue. The basic procedure requires the synthesis of a short DNA primer. Be sure to use a sequence-specific primer. The hairpin at the 3' end serves as a primer for the DNA polymerase. Selecting a specific region of DNA for primer binding requires some additional considerations. I then synthesizes DNA nucleotides in place of the RNA primer it had just removed. Methylation is determined by the ability of the specific primer to achieve amplification. Each Okazaki fragment requires a separate RNA primer. Virus RNA polymerases use VPg as primer. Consists of a projectile, a propellant cartridge and primer or igniter tube. A large pistol primer is used. The firing mechanism is a device for initiating the ammunition primer.