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Science News for May 31, 2002


Penn State engineers boost hydrogen production from fermentation

Researchers at Penn State have developed a method to increase hydrogen production from fermentation by 43%, utilizing industrial wastewater as feedstock. This approach can potentially make hydrogen a cheaper fuel alternative to gasoline, while also reducing costs for wastewater treatment plants.

SourcePenn State·JournalEnvironmental Science & Technology·DateMay 31, 2002

Making embryos male

Researchers identify DHH as key player in fetal Leydig cell differentiation, enabling testosterone production. The discovery provides insights into human reproductive disorders resulting from faulty sex determination pathways.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateMay 31, 2002

Mouse model of alopecia

Researchers created genetically engineered mice lacking keratin 17, a structural protein found in hair follicles, to investigate its role in hair growth. The results show that K17 knockout mice display temporary baldness due to hair fragility and premature cell death, but eventually regrow fur at around three weeks old.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateMay 31, 2002

UF researchers discover blood stem cells

Researchers have discovered that adult blood stem cells can function to make blood vessels, a breakthrough that could lead to new treatments for circulatory diseases. The discovery was made using genetically engineered mice with green glowing stem cells, which were able to form new capillary beds in the eyes.

SourceUniversity of Florida·JournalNature Medicine·DateMay 31, 2002