It is often difficult to distinguish between them.

BBC: Optimism greets Italy's grand coalition

And when one speaker urged them to distinguish between Britain's people and its ruling Labour Party, many in his well-dressed audience booed.

ECONOMIST: Chile

Dr Feld and his team therefore set out to map what these differences are, with a view to using them to distinguish between cellular components.

ECONOMIST: Microscopy

The microbiome, made much easier to study by new DNA-sequencing technology (which lets you distinguish between bugs without having to grow them on Petri dishes), is thus a trendy area of science.

ECONOMIST: The human microbiome

Realism requires that we recognize these gains, not dismiss or disparage them--and that we distinguish between our allies in Iraq, and our enemies.

CENTERFORSECURITYPOLICY: Lieberman: right on the mark

Every day tens of thousands of CHEP's pallets--painted blue to distinguish them from the generic pallets that are swapped between shippers--are returned to the center.

FORBES: Beast of Burden

Rather impressively, just like its little brother, the CubeX relies on cartridges instead of spools for dispensing plastic -- either ABS or PLA. 3D Systems even calls them "smart cartridges" since it can distinguish between the two plastics and adjust the properties accordingly.

ENGADGET

Earmarks -- all these pork projects -- a lot of them, by the way, people like, a lot of them are wastes of money, and we got to be able to distinguish between the two and make it more transparent so that they're not stuck into bills without anybody knowing about it -- (applause) -- but they only cost -- they amount to about 1 percent of the budget as well.

WHITEHOUSE: President Obama Holds a Town Hall in New Hampshire