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The largest genetic study on the bacterium responsible for epidemic dysentery has revealed that the Shigella dysenteriae pathogen, which remains a real scourge in Africa and Asia, probably originated in Europe.

This research, published in the journal Nature Microbiology, also charts the development of the pathogen's resistance to antibiotics.

PORTLAND, Ore. - Scientists at the Oregon National Primate Research Center today revealed that infant rhesus macaques treated with antibodies within 24 hours of being exposed to SHIV, a chimeric simian virus that bears the HIV envelope protein, were completely cleared of the virus. The study, published today in Nature Medicine shows that antibodies given after a baby macaque has already been exposed to SHIV can clear the virus, a significant development in the HIV scientific community.

Australian scientists have uncovered the important role of specialist bacteria in the formation and movement of platinum and related metals in surface environments.

Published in the journal Nature Geoscience, the research has important implications for the future exploration of platinum group metals.

Many of the wild plants which will be the building blocks for future global food supply are missing from the world's genebanks, according to new research by the International Center for Tropical Agriculture (CIAT) in coordination with the Global Crop Diversity Trust (Crop Trust) and the Royal Botanic Gardens (RBG), Kew.

The availability of public transportation and the cost of individual transportation play major factors in just how affordable subsidized housing is in North Texas and across the country.

Shima Hamidi, a University of Texas at Arlington assistant professor in the College of Architecture, Planning and Public Affairs, published a study in Housing Policy Debate journal that assesses the affordability of U.S. Department of Housing and Urban Development rental assistance properties from the perspective of transportation costs.

Long-term declines in the overwintering Eastern population of North American monarch butterflies are significantly increasing their likelihood of becoming extinct over the next two decades, according to Scripps Institution of Oceanography at UC San Diego and U.S. Geological Survey research published today.

Long before animals evolved from sponges, and before plants evolved out of algae, there was a pivotal event that allowed complex, multicellular organisms to arise: the development of the nucleus in single-celled organisms. Eukaryotes, one of the three main branches of living organisms, are defined by the presence of this nucleus and its surrounding membrane, which houses and protects our genetic material. All of the multitude of molecules that need to pass into or out of the nucleus do so via a channel-like structure embedded in this membrane -- the nuclear pore complex.

More older adults used multiple medications and dietary supplements, and taking them together put more people at increased risk for a major drug interaction, according to a new study published online by JAMA Internal Medicine.

Most older adults in the United States use prescription and over-the-counter medications and dietary supplements. There is increased risk among older adults for adverse drug events and polypharmacy.

About 41 percent of young transgender women had one or more mental health or substance dependence diagnoses and nearly 1 in 5 had two or more psychiatric diagnoses in a study of participants enrolled in a human immunodeficiency virus (HIV) prevention intervention trial, according to an article published online by JAMA Pediatrics.

Patients with rosacea, a chronic inflammatory skin condition, appeared to have increased risk of new-onset Parkinson disease compared with individuals in the general Danish population but further studies are need to confirm this observation and the clinical consequences of it, according to an article published online by JAMA Neurology.

A narrative review published online by JAMA Pediatrics examines the current status of cancer in adolescents and young adults and offers a view of the future.

The article by Ronald D. Barr, M.B., Ch.B., M.D., of McMaster University, Ontario, Canada, and coauthors discusses incidence and survival, distribution and biology of disease, special challenges, the price of success, and opportunities for progress.

1,562 women were offered free gynecological pap test screening in three socioeconomically disadvantaged areas in Gothenburg, in 2013. A new study from Sahlgrenska Academy, Närhälsan and the Regional Cancer Center West now shows that these women did not participate to a greater degree than the group that was offered the screening for the usual fee.

Not participating in gynecological pap test screening is the single greatest risk factor in Sweden for acquiring and dying of cervical cancer.

LAS CRUCES, NM - In the ornamental greenhouse and nursery industries, concerns over peatmoss availability, cost, and harvest restrictions have created an imminent need to identify alternative substrates used in the production of potted plants. Growers are looking to chipped wood products used as substrates, hoping to supplement peatmoss without the need for extensive changes in production practices. Scientists at New Mexico State University tested pecan wood for its feasibility as a substrate and revealed several recommendations that can inform growers' choices.

Even with higher education, women with a body mass index (BMI) of 30-34.9 (obese I) have double the risk of depression compared with women of normal weight and same educational attainment, according to a new study conducted by a sociologist at Rice University.

The study was published this month by the journal Obesity Research and Clinical Practice.

The island fox has made a remarkable comeback from the brink of extinction, with three of six populations on their way to becoming the fastest mammal recovered under the Endangered Species Act. But new research published online March 17 in Molecular Ecology uncovers a hidden danger to the future viability of some island fox populations.