PCC STEM's Posts

A certain protein significantly reduces the malaria-infected cells' ability to squeeze through tiny channels compared to healthy cells.
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Scientists have established a genetic mouse model for primary ovarian insufficiency (POI), a human condition in which women experience irregular menstrual cycles and reduced fertility, and early exposure to estrogen deficiency. POI affects approximately one in a hundred women. In most cases of primary ovarian insufficiency, the cause is mysterious, although genetics is known to play a causative role.
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Researchers have documented a remarkable diversity of cuckoo bees in the Cape Verde Islands. All five discovered species are entirely new to science and highlight the unique biota of this isolated archipelago.
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Future monitoring of marine biodiversity and resources may use DNA traces in seawater samples to keep track of fish and whales in the oceans. A half liter of seawater can contain evidence of local fish and whale faunas and combat traditional fishing methods.
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New research examines why some cancer vaccines are not effective, while identifying a new therapeutic strategy for treating autoimmune problems. Scientists suggest that even early stage cancer produces a negative immune response from dendritic cells. Although problematic for cancer treatment, these cells could be valuable tools for preventing the immune system from attacking what it should not, as is the case with autoimmune disorders and organ transplants.
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The policies that several U.S. states have adopted giving tax deductions or credits to living organ donors do not appear to have increased donation rates. A new study has found little difference in the annual number of living organ donations per 100,000 population between the 15 states that had enacted some sort of tax benefit as of 2009 and states having no such policy at that time.
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Less than half of U.S. schools address pandemic preparedness in their school plan, and only 40 percent have updated their school plan since the 2009 H1N1 pandemic, according to a new study.
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Hand and facial transplants are still rare, but experience so far has produced some suggested guidelines for anesthetic management in patients undergoing these complex "composite" transplant procedures, according to a pair of articles.
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Non-pain-related factors—including previous use of pain medications, high perceived risk of addiction, and symptoms of depression—increase the risk of continuing to use strong pain-relieving drugs several months after surgery, according to a new study.
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Water pipe smoking, such as hookah or bong smoking, affects lung function and respiratory symptoms as much as cigarette smoking, new research shows.
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Biomembranes enclose biological cells like a skin. They also surround organelles that carry out important functions in metabolism and cell division. Scientists have long known in principle how biomembranes are built up, and also that water molecules play a role in maintaining the optimal distance between neighboring membranes -- otherwise they could not fulfill their vital functions. Now, with the help of computer simulations, scientists have discovered two different mechanisms that prevent neighboring membrane surfaces from sticking together.
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Rats born to mothers fed high-fat diets but who get normal levels of fat in their diets right after birth avoid obesity and its related disorders as adults, according to new research. Meanwhile, rat babies exposed to a normal-fat diet in the womb but nursed by rat mothers on high-fat diets become obese by the time they are weaned.
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