Figure 3From: Patent applications for using DNA technologies to authenticate medicinal herbal materialSCAR primers can be designed from a whole-genome fingerprint, such as RAPD analysis or comparison of the DNA sequences among species. During RAPD, genomic DNA is amplified by a RAPD primer. A polymorphic band is recovered from agarose gel and then sequenced. The RAPD band is turned into a species-specific SCAR marker.Back to article page