A study found that 51 percent of labels on e-cigarette liquid nicotine containers from 16 North Dakota stores don’t accurately reflect the levels of nicotine found in the products. In one instance, actual nicotine levels were 172 percent higher than labeled. The majority of e-cigarette liquid containers also did not provide child-resistant packaging.
Researchers found that treating metastatic thyroid cancer patients harboring a BRAF mutation with the targeted therapy vemurafenib -- originally approved for melanoma patients with the mutation -- showed promising anti-tumor activity in a third of patients.
A key gene enables the repair of injured muscle throughout life. This is the finding of a study in mice led by researchers at NYU Langone Medical Center and the University of Colorado at Boulder, and published online July 21 in Cell Reports.
Right: Photograph during excavation exhibiting excellent dry preservation of plant remains
Left: A well-preserved, desiccated barley grain found at Yoram Cave An international team of researchers has succeeded for the first time in sequencing the genome of Chalcolithic barley grains. This is the oldest plant genome to be reconstructed to date. The 6,000-year-old seeds were retrieved from Yoram Cave in the southern cliff of Masada fortress in the Judean Desert in Israel, close to the Dead Sea. Genetically, the prehistoric barley is very similar to present-day barley grown in the Southern Levant, supporting the existing hypothesis of barley domestication having occurred in the Upper Jordan Valley.
Investigators from the National Institutes of Health have discovered that cells from HIV-infected people whose virus is suppressed with treatment harbor defective HIV DNA that can nevertheless be transcribed into a template for producing HIV-related proteins. This finding may affect scientists' understanding of the long-term effects of HIV infection and what a cure would require.
Zika virus infects numerous primary cell types and explants of the human placenta, suggesting placental and paraplacental routes of virus transmission. Zika virus can infect numerous cell types in the human placenta and amniotic sac, according to researchers at UC San Francisco and UC Berkeley who show in a new paper how the virus travels from a pregnant woman to her fetus. They also identify a drug that may be able to block it.
Updates to the zoonotic niche map of Ebola virus disease in Africa by David Pigott et al. Though the West African Ebola outbreak that began in 2013 is now under control, 23 countries remain environmentally suitable for animal-to-human transmission of the Ebola virus. Only seven of these countries have experienced cases of Ebola, leaving the remaining 16 countries potentially unaware of regions of suitability, and therefore underprepared for future outbreaks.