Genetically modified cow cloned for low allergy milk

After successfully knocking out the BLG protein from milk in a mouse model using a gene modifying technique known as RNA interference, the AgResearch team applied the same cloning technique to produce Daisy, a female calf who was born with no tail.

Daisy was cloned using the same methods that produced Dolly the sheep. 

“We were successful in greatly reducing the amount of BLG, a milk whey protein which is not in human breast milk and which can cause allergic reactions,” co-author Dr Stefan Wagner said.

“Two to three per cent of infants are allergic to cow’s milk and BLG

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