The characteristic of good a reporter protein is that it should be easy to assay or detect and is not present normally in the test system. Selection of the reporter system also depends on the experimental system, sensitivity needs and the available detection strategy, be it absorbance, fluorescence or bioluminescence.
1 Included among these breeds are the English Toy Terrier and the Yorkshire Terrier. 2  While small, they retain true terrier character and are not submissive  lap dogs 3  . Bull type Terriers: The Bull and Terrier types were originally combinations of bulldogs and terriers as general mixed breed bull-baiting and pit dogs. Toy terriers: Bred down from larger terriers, these terriers are shown in the Toy or Companion group. 2  Included among these breeds are the English Toy Terrier and the Yorkshire Terrier. 3  While small, they retain true terrier character and are not submissive  lap dogs .
Of these 27 types of terriers, four stand out as not only the most popular terriers in the world, but among the most popular twenty dogs of any breed. These types of terriers include the Yorkshire terrier, the Jack Russell Terrier (or Parsonâs Terrier), the Scottish Terrier, and the Miniature Schnauzer. Each terrier possesses his very own characteristics and traits, and of course each dog has his own personality which can not be duplicated.