vigorous

Future studies are planned to test whether the disease takes advantage of the highly proliferative capacity of young blood cells to make patients' leukemia more deadly than older, less vigorous blood cells.

The findings highlight the need for “vigorous monitoring” of rapidly changing glacial lakes and water bodies, the researchers write.

President Theodore Roosevelt was one of America’s most consequential progressive leaders, in no small part because of his vigorous support for conservation, including jumpstarting the national park system.

Despite the optimism, many elements of the cease-fire proposal — which came about after vigorous negotiations brokered by the U.S. and France — remain unclear.

In particular, more vigorous, aerobic exercise is effective for lowering blood pressure, but also everyday physical activity can have a beneficial impact.