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Normal adult <i>C. elegans</i> nematode worms (above) are about 1 mm in length. Adults that had been starved for 8 days early in their larval development (below) grow more slowly once feeding is resumed and end up smaller and less fertile.

Researchers design first artificial ribosome

Researchers at the University of Illinois at Chicago and Northwestern University have engineered a tethered ribosome that works nearly as well as the authentic cellular component, or organelle, that produces...

Trigger found for defense to rice disease

This is Dr Benjamin Schwessinger.Biologists have discovered how the rice plant's immune system is triggered by disease, in a discovery that could boost crop yields and lead to more disease-resistant types of rice.

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Female stink bugs 'select' the color of their eggs

This image shows a female spined soldier bug (<i>Podisus maculiventris</i>) (top) and the range of egg colors she is capable of laying (bottom).Stink bug mothers will lay darker or lighter eggs depending on how much light is reflecting off of a surface. The newly discovered adaptation is likely related to how some...

The light of fireflies for medical diagnostics

Rudolf Griss, Kai Johnsson and Alberto Schena are in their lab at EPFL.In biology and medicine, we often need to detect biological molecules. For example, in cancer diagnostics, doctors need quick and reliable ways of knowing if tumor cells are present in...

Imaging glucose uptake activity inside single cells

Stimulated Raman scattering (SRS) imaging of glucose uptake activity by targeting the alkyne tag of a novel glucose analogue in live mouse brain hippocampal neurons and tumor tissues (in red).Researchers at Columbia University have reported a new approach to visualize glucose uptake activity in single living cells by light microscopy with minimum disturbance. In a recent study published in...

Mosquitoes use smell to see their hosts

On summer evenings, we try our best to avoid mosquito bites by dousing our skin with bug repellents and lighting citronella candles. These efforts may keep the mosquitoes at bay...

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The secret to the sea sapphire's colors -- and invisibility (video)

Sapphirina, or sea sapphire, has been called "the most beautiful animal you've never seen," and it could be one of the most magical. Some of the tiny, little-known copepods appear...

Miniature brains made from patient skin cells reveal insights into autism

This is a human brain organoid showing complex internal organization, with immature proliferating cells (red) and a surrounding layer of maturing neurons (green).Understanding diseases like autism and schizophrenia that affect development of the brain has been challenging due to both the complexity of the diseases and the difficulty of studying developmental processes...

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Melon genome study reveals recent impacts of breeding

The first comprehensive genome analyses of 7 melon varieties was completed by a research team led by Josep Casacuberta, Jordi Garcia-Mas and Sebastian Ramos-Onsins, providing breeders new knowledge important for...

Gut microbes enable coffee pest to withstand extremely toxic concentrations of caffeine

A coffee berry borer (lower left) sits atop a coffee bean, which is its sole source of food and shelter. The beetle thrives in the toxic, caffeine-rich bean thanks to the microbes in its gut, shown in the green microscopy image. A schematic of a caffeine molecule is also shown.The coffee berry borer is the most devastating coffee pest in the world. The tiny beetle is found in most regions where coffee is cultivated, and a big outbreak can...

'Golden jackals' of East Africa are actually 'golden wolves'

A golden jackal (<em>Canis anthus</em>) from Serengeti National Park, Tanzania. Based on genomic results, the researchers suggest this animal be referred to as the African golden wolf, which is distinct from the Eurasian golden jackal (<em>Canis aureus</em>).Despite their remarkably similar appearance, the "golden jackals" of East Africa and Eurasia are actually two entirely different species. The discovery, based on DNA evidence and reported in the Cell...

A single hair shows researchers what a bear has been eating

Researchers used single hairs from grizzly bears at the Washington State University Bear Research, Education and Conservation Center to develop a new, more precise way to look at a what wild bear eat.U.S. and Canadian researchers have found they can get a good idea of a grizzly bear's diet over several months by looking at a single hair. The technique, which measures...

Inbreeding not to blame for Colorado's bighorn sheep population decline

A bighorn sheep in Colorado is pictured.The health of Colorado's bighorn sheep population remains as precarious as the steep alpine terrain the animals inhabit, but a new study led by researchers at the University of Colorado...

Researchers: Body fat can send signals to brain, affecting stress response

The brain's effect on other parts of the body has been well established. Now, a group that includes two University of Florida Health researchers has found that it's a two-way...

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Study sheds light on the ability of different marine species to respond to climate warming

In Eastern Australia, the ocean has been warming at a rate that's 4-times that of the global average. Many marine species have been appearing further south than they ever have...

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Simple technology makes CRISPR gene editing cheaper

Some DNA sequences appear multiple times in the genome. Here, an RNA guide probe labels repetitive regions in the nucleus of a <i>Xenopus laevis</i> sperm.University of California, Berkeley, researchers have discovered a much cheaper and easier way to target a hot new gene editing tool, CRISPR-Cas9, to cut or label DNA.

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Better DNA hair analysis for catching criminals

A simple, lower-cost new method for DNA profiling of human hairs developed by the University of Adelaide should improve opportunities to link criminals to serious crimes.

A lion tale: Humans cause most mountain lion deaths in Southern California

A mountain lion, F92, keeps watch while her juvenile cubs feed at a bait sight in 2014. Busy highways and growing urbanization in the area threaten pumas in Southern California and have led to their genetic decay, a UC Davis study found.The biggest threat to Southern California mountain lions is us, confirms a comprehensive 13-year study of the population's mortality and survival from the University of California, Davis.

Researchers create model of early human heart development from stem cells

When spatially confined, differentiating human induced pluripotent stem cells self-organize into cardiac microchambers. Myofibroblasts are green, cardiomyocytes are red and the nuclei are blue. Cardiac microchambers can be used to study the toxicity of drugs that affect early human heart development.Researchers at the University of California, Berkeley, in collaboration with scientists at the Gladstone Institutes, have developed a template for growing beating cardiac tissue from stem cells, creating a system...

Algae, quinoa, legumes top list of alternative protein choices

Algae is evolving as the next new alternative protein source consumers are anxious to bite into as an ingredient in crackers, snack bars, cereals and breads, according to a July...

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Scientists find molecular switch that creates long-term immunity

Australian researchers have identified a protein responsible for preserving the antibody-producing cells that lead to long-term immunity after infection or vaccination.

Professor David Tarlinton (left), Dr Kim Good-Jacobson (right) and colleagues from Melbourne's Walter and Eliza Hall Institute discovered the presence of a protein called Myb was essential for antibody-producing plasma cells to migrate into bone marrow, preserving them for many years or even decades. Their findings were published in the Journal of Experimental Medicine.Melbourne researchers have identified a protein responsible for preserving the antibody-producing cells that lead to long-term immunity after infection or vaccination.

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