Recombinant DNA
The piece of equipment, that introduces DNA into cells via DNA-coated microprojectiles is known as

gene gun
inoculating needle
DNA probe
laser

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Recombinant DNA
Agrobacterium tumefaciens is

a bacterium that can be used to introduce DNA into plants
a disease in humans that causes loss of weight
a disease in humans that causes loss of sight
a fungi that is used to produce antibiotics in large amounts

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Recombinant DNA
Bacterial cells protect their own DNA from degradation by restriction endonucleases by

having anti restriction endonucleases
deleting all recognition sites from the genome
not producing any restriction endonucleases
methylating the DNA at the sites that the enzyme recognizes

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