Some researchers have pointed to trends they say document the limits of production.

While some researchers pointed to 1980, others believed that the ad first appeared somewhat later.

The researchers point to several limitations of their study.

Other researchers have pointed to the same phenomenon.

Other researchers point to the strong Asian market for American sea urchin roe.

The researchers simply pointed it downward, in effect, toward the center of Earth.

Not unexpectedly, the researchers point to humans as the major reason for this.

Dr. Peters and other researchers point to encouraging recent results from studies involving limited numbers of patients.

However most researchers point toward ephedra as the main ingredient of Soma.

To support such optimism, researchers point to the recent discovery of so-called speciation genes.