The number of repeats changes quite often from one generation to another, which makes them useful markers of identity.

Iron is present in each as traces, but even so provides useful markers.

The authors suggested that alpha-defensin levels might prove a useful marker for schizophrenia risk.

Therefore, the test is not a useful diagnostic marker of autoimmune premature ovarian failure.

It is an useful marker for sling operation.

Left of this, the black, diamond-shaped Coal Face forms a useful halfway marker.

On a much larger scale, the tiny fly can also be a useful marker for environmental neglect, Australian researchers report.

The new studies suggest the protein may be a useful marker of disease long before death occurs.

It is a useful marker for plasma cells, but only if the cells tested are already known to be derived from blood.

A useful marker of zinc status in beta-thalassemic patients.