feed info

50 articles from ScienceDaily

Lungfish fins reveal how limbs evolved

New research on the fin development of the Australian lungfis elucidates how fins evolved into limbs with hands with digits. The main finding is that in lungfish a primitive hand is already present, but that functional fingers and toes only evolved in land animals due to changes in embryonic development.

Team creates better tool to aid COVID-19 diagnosis

A radiologist and an evolutionary anatomist have teamed up to show the same techniques used for research on reptile and bird lungs can be used to help confirm the diagnosis of COVID-19 in patients. Their paper demonstrates that 3D models are a strikingly clearer method for visually evaluating the distribution of COVID-19-related infection in the respiratory system.

Study sheds new light on certainty of opinions

Researchers for years have understood how attitudes held with certainty might predict behavior, but psychologists now suggest there may be a more general disposition at work that predicts the certainty of newly formed evaluations, just as they do for pre-existing opinions.

Understanding the inner workings of the human heart

Researchers used artificial intelligence and genetic analyses to examine the structure of the inner surface of the heart using 25,000 MRI scans. They found that the complex network of muscle fibers lining the inside of the heart, called trabeculae, allows blood to flow more efficiently and can influence the risk of heart failure. The study answers very old questions in basic human physiology and...

First immune-evading cells created to treat type 1 diabetes

Scientists have made a major advance in the pursuit of a safe and effective treatment for type 1 diabetes, an illness that impacts an estimated 1.6 million Americans with a cost of $14.4 billion annually. Using stem cell technology, researchers generated the first human insulin-producing pancreatic cell clusters able to evade the immune system. These 'immune shielded' cell clusters controlled...