DNA fingerprinting.

Promotional video for Cellmark Diagnostics' DNA testing kit. It shows the procedures involved in the test, provides some background history to the development of DNA fingerprinting, and includes pictures of matching and non-matching sets of DNA fingerprints. It focuses on use of the procedure to establish paternity, but draws attention to its uses in immigration disputes, medical diagnosis, establishment of animal pedigrees and anticipates more accurate targeting of medical treatment through the higher standards of diagnosis made possible by the test.