Small melanin particles cause skin cancer
The radiation causes the eumelanin to generate large quantities of free oxygen radicals, which in turn damage cell DNA and hence may lead to cancer. His research was reported yesterday at the annual A...
Measuring the conductivity of blood
Doctors need to measure blood conductivity to calculate the internal pump volume of the heart and the blood circulation rate. However, when patients receive additional fluids – for example, wate...
Physics solves blood vessel mystery
Experiments on the effect have been performed by introducing a compound called angiotensin II into the blood stream of a rat. This compound narrows the diameter of the blood vessels, which increases t...
Complexity holds thekey to predicting epileptic seizures
In a process called electroencephalogram (EEG), brain activity is measured by strapping electrodes to the scalp. The electrodes record weak electrical waves produced from different parts of the brain ...
Blood tests without needles
Recognising blood cells presents a big challenge for automated counting systems. As blood flows through veins, the cells are deformed in the direction of blood flow. Blood also contains a lot of other...
Three steps to better biomedical images
The technique works on any turbid medium observed with light in the wavelength range 200-1000 nm, making it suitable for a wide range of applications. Patent 5719398 describes how three simple stages ...
