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Yeast cells with large oil drops inside of them
Some yeast species convert plant sugars into oils that can be used to make high-quality biodiesel. These Lipomyces tetrasporus yeast cells have large oil drops inside of them. (Patricia Slininger, D3923-1)
Geneticist harvesting seed from switchgrass
ARS geneticist Michael Casler harvests switchgrass seed in a program to develop high-yielding cultivars for bioenergy production. (Wolfgang Hoffmann, D764-1)
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