Placing an injured opossum in a confined space with its healthy counterparts is inadvisable.

Gino Molinari has gone into a more reassuring world and plucked his healthy counterpart over here to assist him.

He added that invaded trees can be spotted from a fair distance during the fall because their leaves change earlier than those of their healthy counterparts.

The difference between refined white foods and their healthier counterparts is processing and fiber.

"People who are caught up short by illness should not have to scramble to prove their full human value to their healthy counterparts," Ms. Register wrote.

Some studies have found that diabetic men have shown lower levels of sexual desire than healthy, age-matched counterparts.

But this too may be a red herring; in two recent studies, Japanese women with breast cancer consumed no less soy than their healthy counterparts.

Using the optical stretcher, it was also shown that cancerous cells differ significantly in their mechanical properties from their healthy counterparts.

Like bones turned fragile from osteoporosis, brittle nails are more likely than their healthy counterparts to break, peel, split and crack.

Infected plants that do not show symptoms may have infected canopies and will yield lower quality products than their healthy counterparts.