© Gist Croft and Mackenzie Weygandt, Columbia University and Project ALS, New York, N.Y.

Amyotrophic Lateral Sclerosis (ALS, also known as Lou Gehrig’s Disease) motor neurons. The stem cells used to generate these motor neurons were induced Pluripotent Stem (iPS) cells made from the skin cells of an 83-year-old ALS patient.

This image won tenth prize in the Olympus BioScapes Digital Imaging Comptition, an international competition of microscope imagery. The winners were announced November 18, 2009. This year, the competition received nearly 2,000 entries from 62 countries. All images and the names of the top winners and Honorable Mentions may be viewed online, and some of images will be part of a traveling exhibition.

A selection of winning images follows.

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All photos © Tim Grimshaw

Above: The Empire State Building in New York City as viewed from the top of Rockefeller Center.

All of these photos were taken with a tilt/shift lens to control the depth of field. View more of Tim Grimshaw’s Manhattan series here.

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© David Tribby

A train car and cooling tower in Michigan City, Indiana. View more of Tribby’s work on Flickr.

© Alexander Gronsky

This image, from Alexander Gronsky’s “Pastoral” series, is on view at FotoWeekDC as part of the exhibit “New Images from Russia,” curated by Lucian Perkins.

The FotoWeekDC festival continues through Saturday, November 14. Read more about FotoWeekDC from PDN.

© Albert Watson

“Michael Jackson,” taken 1999, printed 2000.

This image is on display as a 96″ x 58″ C-print as part of the exhibition “Who Shot Rock & Roll” at the Brooklyn Museum through January 31, 2010. Read a preview of the exhibition on PDNPulse.