US hypoallergenic cats go on sale

The world's first specially bred hypoallergenic cats have gone on sale in the United States.
US biotech firm Allerca says it has managed to selectively breed them by reducing a certain type of protein that triggers allergic reactions.

The cats will not cause the red eyes, sneezing and even asthma that some cat allergy sufferers experience, except in the most acute cases.

Despite costing $3,950 (£2,104), there is already a waiting list to get one.

Allerca first started taking orders for hypoallergenic cats back in 2004.

No genetic modification

It tested huge numbers of cats trying to find the tiny fraction that do not carry the glycoprotein Fel d1 - contained in an animal's saliva, fur and skin - which often prompts an allergic reaction in humans.

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