Birmingham, UK: Close shot of hands of scientist firing gun into special chamber for ballistics test at the National Ballistics Intelligence Service laboratory.

Scientist in green scrubs removing cell tissue from freezer tank in stem cell research laboratory, vials removed from liquid nitrogen tank.

Medium shot of a scientist in a lab pouring sediment-filled water into sample bottles.

Medium shot of a scientist in a laboratory running tests on sediment samples. The scientist man is wearing a white lab coat.

A Forensic Scientist wearing protective clothing examines evidence in laboratory looking through microscope, close shot of hands in purple gloves turning microscope knob

London, UK: Tracking shot of scientists at work in biological sciences research laboratory at Imperial College London.

Close up of mouth opening and DNA swab taken from inside the cheek with a cotton bud

Graphic patterns of a DNA sequence in blue and green dots as seen on a computer screen.

Row of Pipettes attached to machine filling test tubes up with orange liquid in a DNA testing laboratory

Close up of pipette inserted into labelled test tube and slowly extracted

Close up of two flasks side by side in a laboratory. One containing resuspended sediment and the other bearing a "danger radioactive" label.

Close up of a centrifuge spinning rapidly in a laboratory.

Close shot of hands (wearing surgical gloves) slowly extracting swab from test tube.

Various views of lab analysts wearing white coats preparing white liquid sample in a beaker, samples in flasks and analysts doing tests and looking at computer and working with lab equipment.

Laboratory technician in DNA laboratory wearing white protective clothing (lab coat) and purple gloves, working with criminal evidence using tweezers.

Close shot of laboratory worker using pipette to extracting yellow liquid from small vial

Laboratory technician looking through electronic microscope and using pipette

Close up of substance injected into test tube with bunsen burner flame seen in background

Various views of fluids in bottles being agitated by machine in Nanotechnology laboratory

Close up of mouth opening and DNA swab taken from inside the cheek with a cotton bud

Gloved hands taking liquid from small glass jar and injecting into egg to test for bird flu

Close shot of Vials containing frozen embryos removed from storage container, close up of vial

Close up of mouth opening and DNA swab taken from inside the cheek with a cotton bud

Close up of pipette inserted into labelled test tube, camera zooms out to show lab worker working at desk containing bunsen burner and test tubes in rack