[Published on 12 September, 2003]
A vaccination could one day come in the form of a tasty slice of sashimi.
Researchers in Singapore have created zebrafish that produce vaccines
in their muscles, and they say the technology could be extended to popular
food fish, such as salmon, to do away with the pain of injections.
The only catch is that the fish must be eaten raw, as cooking would
destroy the vaccine, which is a protein.
A professor has successfully transferred non-zebrafish genes into the fish,
so they produce hepatitis B vaccines.
However, the edible vaccines are still in the early stage of development
and will require years of clinical trials before they can make their way
to the dinner plate.