Scientists had thought that the accuracy of such stories couldn't persist for much more than 800 years; their truths altered and lost, like in a game of telephone, over longer spans of time.
During the experiments, the tested C. elegans stages were not able to persist for much more than 1 day in the intestines, indicating an only short-term interaction with the slug.
This coincides with the observation that E2 "was widespread, persisted much longer, and was more mobile than previously determined" in soils of a pig farm in North Dakota, United States of America [18].
Most mammoths were gone by 10,000 years ago, though a few small populations persisted until much more recent history.
But the belief in racial hierarchy also persists in much more subtle ways, in the subconscious biases that well-intentioned individuals harbor without ever being aware of them.
A long-term (60 year) follow-up of two groups of alcoholic men concluded that "return to controlled drinking rarely persisted for much more than a decade without relapse or evolution into abstinence".
In contrast, however, the results of a long-term (60-year) follow-up of two groups of alcoholic men by George Vaillant at Harvard Medical School indicated that "return to controlled drinking rarely persisted for much more than a decade without relapse or evolution into abstinence".
When AXH was mixed with CIC in a 1 1 molar ratio, however, oligomeric species were more abundant and persisted much longer, being detectable for up to 72 hr.
Psychiatric symptoms persisted much longer than symptoms of physical impairment.
