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Researchers have discovered two tiny clusters of neurons in the brain stem in mice. These clusters were observed to regulate process of sigh in those rodents, which are believed to possess respiratory system similar to that in human. The new findings may help in understanding other factors leading to more complex behaviors in human.

The brain has a breathing center which regulates breathing rhythm as well as the kind of breath we take. The center has different kinds of small neurons. These neurons work as buttons to turn on different breath process, that are regular breath, sigh, yawn, sniffs, cough and many other.

Researchers at the University of Toronto found that an adult suffering from concussions is in more risk of attempting suicide. Their findings published in the Canadian Medical Association Journal gave evidence of an association between increasing suicides and concussion.

In past, most of the NFL players, such as famous Junior Seau and Dave Duerson, did suicide. They suffered chronic traumatic encephalopathy, a degenerative brain disease linked to repetitive head trauma. The researchers examined over 235,000 adults who suffered concussions and found that in every 100,000 people, there are 31 cases of suicide.

Hawaii County mayor has announced a state of emergency on Hawaii's Big Island due to an outbreak of dengue, a mosquito-borne fever.

Since September last year, about 250 confirmed cases of the mosquito-borne virus have been reported on the island. In the declaration, Mayor Billy Kenoi said that state health officials first reported two cases in late October 2015.

Kenoi said that dengue fever is a virus that gets transmitted by infected mosquitoes, and though it isn’t endemic to Hawaii, it now and then gets imported here by infected travelers.

The Hawaii Department of Health said that symptoms of the mosquito-borne fever include all of a sudden onset of fever; severe headaches; pain in eyes, joints and muscles; and rashes. The symptoms generally stay for 1 to 2 weeks.

Junior doctors in England are starting another day long strike protesting the latest contract that the health secretary Jeremy Hunt has been threatening to impose on them.

Around 2,884 non-urgent operations have got cancelled, and an unknown number of consultations at outpatient clinics, in front of the show of strength by many of 45,000 junior doctors in England.

The walkout held on Wednesday, followed the collapse of last-ditch talks between the British Medical Association, NHS Employers and the Department of Health regarding the shape of the latest contract under which all juniors in England have to operate August onwards.

CTI BioPharma Corp said that the US Food and Drug Administration (FDA) has placed a full clinical hold on its investigational latest drug application for pacritinib. The company said that it has taken back its application for the experimental blood cancer drug and is going to review the safety and efficacy data.

The regulator also suggested that CTI should request for a meeting before it submits its response to the full clinical hold.

Earlier on February 4, the FDA had put a partial hold on pacritinib, citing excess mortality and other bad events in pacritinib-treated patients.

As part of the full clinical hold, all patients on pacritinib should discontinue it right away and no patients can get enrolled or begin pacritinib as early or crossover treatment.

January 2016 proved to be the lowest every January for the Arctic sea ice shelves due to the region being surrounded with warm temperatures, while the cold air managed to rise up to mid-latitudes owing to low air pressure. Arctic sea ice coverage was 5.2 million square miles (13.53 million square kilometers) on an average in the month of January 2016. The figure is 402,000 square miles (1.04 million square kilometers) less than the average coverage for this month from 1981 to 2010.