Diagnosis “Hunted” Down

Migratory Behavior of Hunted Elk

During 1990–2000, I investigated patterns of fall migration and harvests of the Jackson elk herd. Specifically, I compared the timing of fall migration of the 2,500–4,500 elk (Cervus elaphus) that summered in Grand Teton National Park (GTNP) and wintered on the National Elk Refuge (NER) with elk that used other summer ranges by monitoring 512 migrations of radiocollared elk and by direct counts...

Hunted predators: Charisma confounds.

IN THEIR PERSPECTIVE “When the hunter becomes the hunted” (19 June, p. 1312), R. Woodroffe and S. M. Redpath rightly pointed out that a social consensus, in addition to scientific evidence, is critical to effectively control species deemed overabundant, such as some predators, because social conflicts over the need for control undermine management decisions. We stress here that social acceptabi...

Prenatal Diagnosis of Down Syndrome

Chromosomal aberration is a phenomenon occurring relatively commonly in the development process. Chromosomal aberration is known to have various causes, and its frequency has been reported to vary particularly according to maternal age. Though different among reports, the frequency was around 0.6-0.8% in analysis with all childbirths1 and around 2-3% in case childbirths were reclassified based ...

Non Invasive Prenatal Diagnosis of Down Syndrome

Application of Molecular DNA Markers (STRs) in Molecular Diagnosis of Down Syndrome in Iran

Down syndrome is one of the most common causes of mental retardation observed in approximately 1/700 live birth. The use of two or more STR markers related to chromosome 21 facilitates the diagnosis of Down syndrome within about six hours from the collection of the samples. This is the first study has been performed in Iranian population to assess the diagnostic value of using small tandem repe...