1.   The more promising approach is to study the metabolic activity of the brain during behaviour.

2.   The same argument applies in principle to studies of metabolic activity.

3.   Central nervous system regulation of hepatic function may provide a mechanism by which bile production is integrated with other metabolic activities particularly, digestive functions.

4.   Breath methane was measured and viable counts and metabolic activities of methanogenic bacteria and sulphate reducing bacteria determined in faeces.

5.   Breath methane was monitored and metabolic activities of methanogenic bacteria and sulphate reducing bacteria studied in faecal samples.

6.   As metabolic activity begins to increase in late winter, fluid pressure also begins to build and the sap starts moving upward in the tree.

7.   Brain-imaging studies have shown that most patients with frontotemporal dementia who develop skills have abnormally low blood flow or low metabolic activity in their left temporal lobe.

8.   For example, clinically depressed patients have decreased metabolic activity in the left frontal lobe and amygdala, two regions involved in planning and emotions.

9.   Throughout the experiment, Clegg detected no metabolic activity at all.