.
TNS stands for Trapped Neutrophil Syndrome, an hereditary disease where the
bone marrow produces neutrophils (white cells) but is unable to effectively
release them into the bloodstream. Affected puppies have an impaired immune
system and will eventually die from infections they cannot fight.
Trapped Neutrophil Syndrome
TNS
CL is often referred to as a disease that only impacts Australasian Border
Collies.  This is not true. We can only speculate that CL was believed to be
associated with the Australasian Border Collies because CL was originally
identified and diagnosed in Australia more than 25 years ago.  However,
since that time, in the United States, the Texas A&M University reported that it
had diagnosed CL in several Border Collies located in Texas.  Although the
University never released the identity of those dogs, this occurred several years
prior to the importation of any Australasian dogs to the United States.  Therefore,
these dogs had to be from American and/or British lines.

Approximately 10 years ago, a Border Collie located in Great Britain died of CL.  A
post-mortem examination confirmed the diagnosis.   Again, the identity of the dog
was never released.  However, the dog was known to be from 100% British lines.
Neuronal Ceroid Lipofuscinosis
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border collie puppies for sale
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