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14.2 Biotechnology Products -- Part 2
GFP is used to modify fish.
Human cells are tagged with a GFP-labeled antibody.
mammals produce a product The basic procedure for generating a transgenic animal is shown in this figure.
A goat can be created with a bioengineered egg and produce a product in its milk.
Transgenic goats can be cloned into cloned goats by transferring their genes into donor eggs.
For a long time, researchers believed that adult animals could not be cloned due to the fact that all the genes of an adult cell need to be turned on.
Scottish scientists produced a cloned sheep called Dolly in 1997.
The cloned animals include calves, goats, pigs, rabbits, and even cats.
The techniques can be used to produce genetically modified animals.
The development of host females continues until the clones are born.
The clones have the same product in their milk as the original animal.
This procedure will be used a lot now that scientists have a way to clone animals.
It is difficult to clone an animal with a low success rate.
The early death of the clone is a result of the vast majority of attempts being unsuccessful.
One advantage of molecular pharming is that certain proteins are more likely to function properly in mammals.
It is possible that this is due to specific modifications that occur in mammals but not inbacteria.
When expressed inbacteria, certain proteins may be degraded quickly or folded wrong.
The yield of milk can be large.
Each dairy cow produces about 10,000 liters of milk a year.
In some cases, a cow can produce 1 gram per liter of its milk.
There are many different research projects using mice.
The embryos that were injected into males did not develop into females.
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