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'Six degrees' method samples hidden populations

A new sociological sampling method, called respondent-driven sampling, can identify hard-to-reach groups. By analyzing the connections between individuals in a group, researchers can gather information and correct for biases to obtain a representative sample of populations such as drug users, jazz musicians, and other marginalized groups.

SourceCornell University·JournalPoetics·DateNov 6, 2000

Life-Saving Discrepancy: Study Shows Effectiveness Of Mismatched Bone Marrow Transplants

A study by Weizmann Institute of Science and Perugia University in Italy has found that mismatched bone marrow transplants can be as effective as fully matched transplants, overcoming key obstacles such as graft failure and immunological reaction. The method, which uses extremely large doses of donor marrow, has raised hopes for increa...

SourceAmerican Committee for the Weizmann Institute of Science·JournalNew England Journal of Medicine·DateOct 22, 1998

A Genetic Skeleton Key

Researchers have developed a new method to find human genes by using analogous genes from other species, offering a more accurate approach than existing techniques. The method has been tested on nearly 100 genes, with 40 out of 47 mammalian reconstructions being perfect and 94-97% accurate in the remaining cases.