One and a half millilitres of each fraction was collected.
Three millilitres of scintillation fluid were added to the void volume and radioactivity measured.
The concentrations are measured in units of number of cells per millilitre of blood.
Ten millilitres of the mixture was resolved by 1% agarose gel electrophoresis as described above.
Ten millilitres of distilled water was added to the bag to obtain a near saturated moisture level.
The current occupational hygiene standard for chrysotile asbestos dust is two fibres per millilitre.
Under normal circumstances man has a balance in the blood of between 10 and 40 micrograms per 100 millilitres of blood.
Driving experiments on closed courses showed impaired responses to braking and steering in accident avoidance manoeuvres at concentrations of around 30 milligrammes per 100 millilitres.
