According to UPI.com the scientists of Northwestern University claim that bones may be printed on a 3D-printer. For this purpose, researchers have designed a special ink from mineral hydroxyapatite and the biodegradable polymer. The scientists have conducted experiments in stem cells and animals.

It is known that women are twice more likely than men suffer from depression. A lot of them refuse to take hormonal contraceptives because of mood changes. According to UPI.com the scientists from the University of Copenhagen have analyzed data of 1061997 women. The average age of participants was 24 years.

It is reflected in women’s decisions. Such conclusion was made by the researchers from Concordia University. Their experiment involved 45 women with regular menstrual cycles. Participants answered the questions about menstruation, contraceptive use, pregnancy, hormonal medications taken and lifestyle, The Times of India reports.

The hormone erythropoietin is mainly produced in the kidney. It is involved in the production of red blood cells. Also erythropoietin is able to increase sportsmen productivity. Due to this fact the hormone is recognized as a dope. The new study, conducted by members of the University of Barcelona, involved 79 people with depression or bipolar disorder, Zee News reports.

Scientists have found that carotid bodies of a carotid artery can be responsible for hypertension. News-medical writes that the therapy should effect on them. It was proved that by removing some of the bodies, in some cases, instant and prolonged pressure reduction can be achieved. Moreover, no medicine shows such results.

At present, antibiotics are the only remedy for bacterial infections. But gradually bacteria mutate and become resistant to medications. Scientists from the University of Melbourne attempted to solve this problem. They created small star-shaped polymers that can fight bacteria that are resistant to antibiotics.

The fast and simple test for tumors was presented by the scientists at Swansea Science Festival in the UK. The test indicates red blood cells’ alterations that occur in the human body when the cancer cells present.

Scientists of Brown’s University have revealed that the disease, detected at the brothers and sisters of two families in Pakistan and Oman, is associated with changes in GPT2 gene. It encodes an enzyme which plays an important role in mitochondria - "power plants" of cells. The study was started over 5 years ago, NDTV reports.

So, some genetic variants that increase the risk of Alzheimer's disease or cancer do not leave from generation to generation. It turns out that the process helping people to resist pathogens, allows the problematic mutations to occur again in the genome. That is, the law of evolutionary selection does not work here, The Economic Times says.

Scientists constantly look for safe sweeteners. The latest development is a fruit protein brazzein. It is sweeter than regular sugar, and it contains fewer calories, Lab Manager says. But the protein has a problem: if it is obtained directly from the fruit harvested in West Africa, it may be very expensive. Therefore, the scientists have made the fungi to produce the protein in vitro and in large quantities.