The perchlorate anion is persistent because of its tetrahedral structure (Wolff 1998).
Viruses can be persistent but undiagnosed because fluctuating levels of infection around the threshold of detectability (Woodman et al, 2001).
Higher platelet count in women cannot be explained by the different hormonal profiles or a compensatory mechanism associated with menstrual blood loss because the difference was persistent regardless of the woman's age.
Recent data from our group and others have revealed that stress-induced activation of a DDR at telomeres is persistent compared with nontelomeric damage, mostly because of inhibition of DNA repair mechanisms at telomere regions (20, 25).
Here is an extract from his piece: unfulfilled dreams don't go away, and the dreams of art are especially persistent, because art is always bringing up its past, even when it doesn't know what to do with it.
The influx of students was abundant and persistent because of the affluence, honor and secured employment offered by the profession.
However, dopamine had to be infused because of persistent oliguria.
There is evidence showing that dengue infections tend to recur at or near the same places in time, 31, 32 which might be because of persistent Ae. aegypti's hot spots.
In one patient from the ORP group, bowel continuity could not be restored because of a persistent intra-abdominal abscess.
