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

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 view of Arctic explorer Jim McNeill carrying out environmental tests at the Canadian Arctic - shows close view of McNeill's hands in protective clothing turning large hand drill then camera pans up to show his face

London: Mid shot of a hospital laboratory technician transferring a sample of blood to a test tube using a pipette.

Denmark: Laboratory worker holding a syringe containing a blood sample, the sample is then shaken and placed in a testing machine.

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.

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

Close view of large hand drill in foreground spiralling downwards into ice (as part of global warming test) against backdrop of snowy landscape with stationary boat in background

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

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

Scientist using pipettes to transfer samples into test tubes for genetic testing, close shot of robotic analysis equipment with automated pipettes dispersing samples into test tube racks.

Close up of a small containing a doping sample sitting in a machine tray with empty slots and a wide of the grey machine.

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

Rows of empty chairs and tables to be used for examinations in school gym

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.

Back view of lines of pupils sat at tables during exam in school hall as male teacher walks amongst desks

Pregnant woman lying in hospital bed having three dimensional scan, doctor operating new ultrasound equipment on the woman's stomach. Small screen shows the baby moving in the womb during the sonogram.

Camera pans along rows of empty exam tables in school gym

Close-up shot of a doctor taking a blood sample from a patient's arm.

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

Camera looks down on Secondary school boy sat at table in school hall during exam with hand on forehead as if thinking

Close shot of Ultrasound scan of unborn baby

View looking down onto rows of exam tables in school hall with pupils sat at table preparing to start exam

Side view of female radiologist in darkened hospital room wearing white uniform, she is looking at X-ray photographs in light box on wall which show areas of human skeleton

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

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

View looking down onto rows of exam tables in school hall as teachers put exam papers down on desks

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

Hand held camera moves along rows of empty exam tables in school gym imitating child's eye-view as if looking for desk

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