Final answer:
Using a gene gun is a valid method to inject DNA into cells, particularly effective for plant cells due to their thick cell walls.
Explanation:
True. Using a gene gun is a valid method to inject DNA into a cell. A gene gun uses small metal particles coated with DNA, which are blasted at plant or animal tissue at high velocity to introduce genetic material into the cells. This method is particularly effective for plant cells due to their thick cell walls.
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