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Ottawa Herald in Ottawa, Kansas

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This newspaper page contains 5 articles. Subscribers can read the full text of each article.

Newspaper

Ottawa Herald

Location

Ottawa, Kansas, United States of America

Date

Jun 03, 1999

Page

5

Keio researchers knot DNA with optical tweezers

Japanese graduate student Yasuharu Arai used dual laser beams in a microscope to twist and knot DNA strands from a fish virus. After months of trial, he tied more than a dozen strands and even placed two knots in some, a feat described in Nature.

Keio University Yokohama Yasuharu Arai Everest Kazuhiko Kinosita Jr Nature

Transplant restores sight in legally blind patients eye study

In a long term study Japanese doctors restored vision in about half the eyes treated by transplanting stem cell rich tissue into the cornea. Thirty nine patients formerly legally blind due to burns or chemical injury saw epithelium production resume and some reach near normal acuity after multiple procedures.

Holland Department of Ophthalmology University of Minnesota Harvard

Mystery star Eta Carinae lights up unexpectedly again

Astronomers report Eta Carinae in the Southern Hemisphere has brightened sharply, doubling or tripling its energy output in the last year and a half. The massive star, 7,500 light years away, historically erupted in the 1840s and faded behind dust. current observations show an unprecedented energy surge.

Kris Davidson University of Minnesota Chicago Earth Davidson Hubble Space Telescope

Energy Dept abandons key step in nuclear waste vitrification plan

After 16 years of tests the Energy Department drops a critical separation step at Savannah River in South Carolina. Secretary Bill Richardson will hire a private contractor to explore alternatives to the failed process that produced explosive gases. The plan to vitrify waste into 6,000 glass logs could cost over 17 billion dollars and take about 30 years. A GAO study estimates a substitute method may take 8 to 10 years and cost 1 to 3.5 billion.

Washington Energy Department South Carolina Department Energy Bill Richardson General Accounting Office Congress

Drug may allow mismatched bone marrow donors

A new immune suppressing drug targets only the problematic immune response, enabling bone marrow transplants from poorly matched donors. Reported in the New England Journal of Medicine, early trials on terminally ill cancer patients show promise and potential extension to hearts, kidneys, and other organs. Dr Eva Guinan of Dana-Farber Cancer Institute notes this could broaden transplant feasibility by reducing strict matching requirements.

Boston New England Journal of Medicine Eva C. Guinan Dana-Farber Cancer Institute

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