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 .
The Yorkshire Terrier is a tan dog with a blue saddle. Particolours exist, although they are not correct for the breed standard. The particolour coat is white with black/blue and tan. It is very rare to get a particolour, and if one is found, it tends to be very expensive.orkshire Terrier. The Yorkshire Terrier is a small dog breed of terrier type, developed in the 19th century in the county of Yorkshire, England, to catch rats in clothing mills, also used for rat-baiting.