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

laser
inoculating needle
DNA probe
gene gun

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Recombinant DNA
The Southern blotting technique depends on

the molecular mass of proteins
similarities between the sequences of probe RNA and experimental RNA
similarities between the sequences of probe protein and experimental protein
similarities between the sequences of probe DNA and experimental DNA

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