1975 Press Photo Laser beam at end of endoscope helps fight ulcers - now16989

A bright laser beam shines from the end of an endoscope being tested at the University of Washington in Seattle. Inserted in humans, the tubular device can search inside the stomach for bleeding. Then with a zap of the laser it can cauterize the hemorrhage.

Photo is dated 1975.

Photo measures 10.25 x 8 inches.