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Holger Jannasch works with a chemostat in his labratory.

Holger Jannasch works with a chemostat in his labratory.
Holger Jannasch works with a chemostat in his labratory.
Holger Jannasch works with a chemostat in his labratory.
Holger Jannasch works with a chemostat in his labratory.
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Holger Jannasch works with a chemostat in his labratory.
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01/01/1966
com/cullen/Jannasch.jpg
Date is approximate.
Image of The Day caption:
Microbiologist Holger Jannasch (1927-1998), shown in his lab about 1966, is remembered for making seminal discoveries in microbial ecology and launching the new field of deep-sea microbiology. He began studying bacterial metabolism in the high pressure and low temperature of the deep sea after seeing that lunches left for months on the seafloor when Alvin sank didn't decompose. He was also among the first to study life and chemosynthetic bacteria at hydrothermal vents. During his long career at WHOI, Jannasch traveled the world and made 35 research cruises and 23 Alvin dives. "Science is an adventure, not a career," he said.
Caption from Down to the Sea for Science, pg. 103:
Holger Jannasch works with a chemostat in his laboratory about 1966. The continuous culture apparatus was designed to allow Jannasch and colleagues to provide a continuous flow of nutrients to the marine sulfate-reducing bacteria they were studying.
Photo courtesy of WHOI Archives
© Woods Hole Oceanographic Institution
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