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 .
As the Yorkie terrier is one of the world's smallest dogs they do have special needs, and although a dog with a big spirit they are generally even tempered. As they are excellent guard dogs they can have a tendency to bark which is annoying for the neighbours.orkshire Terriers are agile, graceful and an alert with a high level of intelligence. However they can have birth defects and they are notoriously difficult to housetrain. Whilst these are negative aspects that do not mean that a Yorkshire terrier is not for you.