concentration

Researchers have developed reliable methods based on DNA analysis to assess the concentration and viability of anthrax spores after prolonged storage.

The techniques and data are essential steps in developing a reliable reference standard for anthrax detection and decontamination.

Women receiving chemotherapy for breast cancer frequently report problems with memory and concentration, but two new studies suggest that chemotherapy is not the cause of these problems, and the stress of the diagnosis may be.

Soils under desert pavement have an unusually high concentration of nitrate, a type of salt, close to the surface.

Vulnerable to erosion by rain and wind if the desert pavement is disrupted, this vast source of nitrate could contaminate surface and groundwaters, posing an environmental risk.

Researchers have isolated biomarkers in the blood that identify mood disorders, a breakthrough that may change the way bipolar illness is diagnosed and treated.

The panel of markers is present in differing amounts in individuals suffering from high or low mood states.

The concentration of the blood markers also varies depending on the severity of the depression or mania the individual experiences.