[Hook: Ja Rule] + (Ashanti) Girl your stare, those eyes I (love it when you look at me baby) Your lips, your smile I (love it when you kiss me baby) Your hips, those thighs I (love it when you call me baby) And I can't, deny I (love it when I'm witchu baby) [Ja Rule] I, got a fetish for fuckin you witcha skirt on.
The primers used must be specific to the targeted sequences in the DNA of a virus, and the PCR can be used for diagnostic analyses or DNA sequencing of the viral genome. The high sensitivity of PCR permits virus detection soon after infection and even before the onset of disease.
A primer must be synthesized by an enzyme called primase, which is a type of RNA polymerase, before DNA replication can occur. The synthesis of a primer is necessary because the enzymes that synthesize DNA, which are called DNA polymerases, can only attach new DNA nucleotides to an existing strand of nucleotides.