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Biology
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BEN Patient
Balkan endemic nephropathy (BEN) patient from a BEN village in Romania. The photo was taken at a dialysis clinic in Romania where the patient traveled every 2 to 3 days to receive dialysis, the principal treatment option for people with BEN. This patient died from complications of BEN within a year ... 
Sampling a Sprint in BEN Village
USGS Researcher Calin Tatu sampling a spring in a Balkan endemic nephropathy (BEN) village in Romania. Samples of water are tested for the presence of toxic organic compounds that are linked to BEN....
Kidney Size Comparison of BEN Victims
Normal size kidney (left) and a Balkan endemic nephropathy (BEN) kidney (right). The BEN kidney is reduced by one third compared to a normal kidney. The collapse of the kidney structure in the BEN kidney causes the organ to cease to function, resulting in uremia (blood poisoning) and requiring dialy...
Pliocene Lignite Coal from BEN Village
Closeup of Pliocene lignite coal from a Balkan endemic nephropathy (BEN) village in Serbia. Lignite is low rank, or relatively unaltered (soft, or “brown”) coal, and is characterized by a brownish color and appearance that often resembles wood. This lignite releases copious amounts of dissolved orga...
BEN Sampling in Serbia
USGS scientists Bill Orem (left) and Terry Lerch (right) recording data and collecting samples at a Balkan endemic nephropathy (BEN) household in Serbia. BEN patients typically come from small villages and are often farmers....
Pliocene Lignite Bed
Seam or bed of Pliocene lignite from a mine in the Balkan endemic nephropathy (BEN) area of Romania. Rainwater falling onto the surface penetrates into the ground, becoming ground water, and leaches toxic organic substances from this coal. The ground water continues to BEN villages in the valleys be...
BEN Sampling in Serbia
USGS scientist Bill Orem (left) and Adrian Muntean, a colleague from Romania, sampling water from a well in a Balkan endemic nephropathy (BEN) household in Serbia. The scientists will analyze the water for the presence of coal-derived organic substances dissolved in the water. The USGS works closely...
Drinking Well in a BEN Village
A well, typical of those found in both Balkan endemic nephropathy (BEN) villages and non-BEN villages in the affected countries. Wells and springs are the primary drinking water supplies for these rural villages. In the BEN areas, these shallow wells are fed by groundwater that leaches nearby immatu...
Exposing Pliocene Lignite Bed Near a BEN Village
Nikola Pavlovic, a kidney specialist and a USGS collaborator on Balkan endemic nephropathy (BEN) studies from Serbia, is shown exposing a small Pliocene lignite bed near a BEN village in the Vratza area of Bulgaria. The Pliocene lignite seams vary greatly in size and extent. BEN villages are always ...
Pacific Brant family in Alaska
Pacific brant family on the Yukon-Kuskokwim Delta, Alaska. ...
Yellow Legged Frog
USGS scientists found this adult mountain yellow-legged frog on June 10 in Tahquitz Creek, a rediscovered population of the endangered frog in the San Jacinto Wilderness, San Bernardino National Forest, California....
Assessing Sites for Yellow Legged Frog
Assessing suitable sites in southern California for reintroducing endangered southern mountain yellow-legged frogs, USGS scientists rediscovered a population in the San Jacinto Wilderness, 50 years since this frog was last seen there....
Students recording bird band recovery records
Students Anaga Nmagu and Danielle Travers, hired with ARRA funds, are converting more than one million hand-written bird band recovery records into digital format at the USGS Patuxent Wildlife Research Center. Once digitized, these invaluable recovery records will be linked to the Bird Banding La...
Agapostemon Splendens (Sweat Bee)
A male Agapostomen splendens: A bee of sandy areas also known as the "sweat bee."...
Panoramic of Biscayne Bay
Facing east, a panoramic view of Biscayne Bay. The mainland is seen at far right. Biscayne Bay is an estuary, a place where freshwater and salt water meet. Freshwater flow from the land supplies the bay with nutrients....
Marine Vegetation and Rocks
Marine vegetation and rocks seen through the surface of Biscayne Bay waters....
Flooded marsh
The marsh of Water Conservation Area 3 as seen looking north of I-75 (Alligator Alley). Spatterdock are seen in the foreground....
Flooded marsh
Flooded marshes of Water Conservation Area 3 (WCA-3), seen north of I-75 (Alligator Alley)....
Flock of birds
A large flock of birds, mostly egrets, resting and flying along a canal on Highway 833 (a short drive north off of I-75 (Alligator Alley))....
Alligators along canal
Two alligators lying along a canal, just north off of I-75 (Alligator Alley) onto Highway 833....
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Page Last Modified: Wednesday, October 14, 2009
