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B cells, the source of damaging autoantibodies, have long been thought to depend upon T cells for their activation and were not considered important in the initiation of autoimmune diseases like lupus or rheumatoid arthritis. An article in the journal Immunity turns this paradigm on its head by showing that in systemic autoimmune diseases B cells can be activated the absence of T cells.

Fingerprints can reveal critical evidence, as well as an identity, with the use of a new technology that detects trace amounts of explosives, drugs or other materials left behind in the prints. The new technology also can distinguish between overlapping fingerprints left by different individuals -- a difficult task for current optical forensic methods.

Scientists have unraveled a new biochemical pathway that triggers a critical repair response to correct errors in the DNA replication process that could otherwise lead to harmful or fatal mutations in cells. Though the work focused on yeast cells, the team expects to find an analogous system in human cells that could be exploited as a target for potential therapies for cancers, which are often caused by such repair mechanisms going off course.

Are you a person who loves to go out, party, and have a few drinks? Well if so do not take the risk of claiming an incents person’s life, use a BAC Calculator before you decide to put the key in the ignition.

A blood alcohol content calculator helps to measure the percentage of the alcohol concentration that is in an individual’s bloodstream. These machines tend to measure the concentration by the mass per volume. This will help to determine if a person that has consumed alcoholic beverages is legally intoxicated.

Every state has traffic laws regarding driving while intoxicated so before you are too impaired make sure that you have a designated driver.

Blood Alcohol Level Calculators are generally used by all the state officials. The results of this test are generally used against you in court.

Driving under the influence of alcohol is one of the world’s most serious offenses around the world. A DUI could result in major consequences and can affect your future so make sure that you use a blood alcohol limit calculator and know your limit!

DUIs can be very costly so is it really worth it all? Having to pay all those outrageous fines and even an increase in your insurance may occur. Therefore, be smart and drink wisely!

Researchers have described the mechanism by which p53 regulates cells and protects them against DNA damage that might lead to cancer. The study shows that two p53 target genes -- called Sestrin1 and Sestrin2 -- provide an important link between p53 and a protein kinase called mTOR, a central regulator of cell growth.

Flying downwind from Chinese mainland, unmanned aerial vehicles will measure emissions of soot and other forms of black carbon during China's "great shutdown."

Embryonic-like stem cells can be efficiently generated using a natural signaling molecule instead of the virally delivered cancer-causing gene c-Myc. The results represent progress in overcoming hurdles to the potential use of reprogrammed cells for stem-cell-based therapies in humans.

A new study examines if no-nose bike seats would be effective in alleviating the harm caused by using a traditional seat.

A new study suggests that monitoring levels of a hormone called fibroblast growth factor 23 may provide information crucial to the treatment of patients with kidney failure.

Chest pain and shortness of breath are common symptoms that send tens of thousands of heart failure (HF) patients into US hospitals each month. Cardiologists may now be able to curb such visits for some of their HF patients with the use of new wireless pressure sensor technology that allows physicians to track the pulmonary artery pressure of patients while these patients remain at home.