What is the micro injection method of DNA introduction into host cells used for?

Used to purify the DNA. Used to produce sticky ends of DNA. Provide protection against pathogen. Inject recombinant DNA into the nucleus of an animal cell.

Inject recombinant DNA into the nucleus of an animal cell.

This is the way to introduce alien DNA into host cells. In a method known as micro-injection, recombinant DNA is directly injected into the nucleus of an animal cell.