Word: chlorella
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Enclosed though he was in 9-ft. by 5-ft. tank, Biologist Joe D. McClure was not alone: connected with him by pipes were several billion or trillion single-celled algae (Chlorella). Looking like grass-green soup, the algae were housed in tall columns faced with transparent plastic and brilliantly lit by a bank of fluorescent lamps. Parades of bubbles climbed up the columns-and it was those bubbles, enriched with oxygen by the algae, that McClure last week breathed for 26 hours before emerging hale and hearty...
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