A. Whittingham

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Nanotechnology is the new industrial revolution of the 21st Century as the various processes lead to radical improvements in medicine, manufacturing, energy production, land remediation, information technology and many other everyday products and applications. With this revolution however, there are undoubted concerns for health, safety and the environment(More)
Irritation and other forms of local toxicity following contact with eyes is a potentially serious problem arising from occupational exposure to chemicals. Traditionally, evaluation of the irritant potential of novel chemicals has relied on the use of in vivo studies with rabbits. Concerns about the predictive potential of in vivo methods for human hazard(More)
Based on two successfully completed ECVAM validation studies for in vitro skin corrosion testing of chemicals, the National Co-ordinators of OECD Test Guideline Programme endorsed in 2002 two new test guidelines: TG 430 'Transcutaneous Electrical Resistance assay' and TG 431 'Human Skin Model Test'. To allow all suitable in vitro human reconstructed (dermal(More)
A previous 'in house' validation study showed that the SMI assay can be used as an alternative to the in vivo Draize eye irritation test. The aim of this multi-centre study with four participating laboratories was to assess the transferability and inter-laboratory variability of the assay using 20 reference chemicals covering the whole irritancy range. The(More)
The problem of choosing which collimator to use for imaging a new isotope has been approached by collecting resolution and sensitivity data for a selected group of isotopes. These have been chosen to be readily available and to have generally a single gamma-ray only. Resolution and sensitivity plots for a low energy collimator and a high energy collimator(More)
The uptake of 201Tl-chloride in tumours has recently been investigated in several authors' laboratories. We are reporting studies on the uptake in malignant melanoma in mice. Generally, we confirm the published data qualitatively in finding higher uptake in tumour than in muscles. We confirm the rapid blood clearance and high kidney concentration, but we(More)
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