Pakistan’s health minister said Sunday that an injectable medicine that was causing a severe eye infection and sight loss in diabetic patients in the province of Punjab has been recalled and an investigation ordered while police are looking for the suppliers.

Flat-faced or brachycephalic dogs breeds such as English and French bulldogs may be likely to display “helpless” traits by looking at humans more often than a longer-muzzled dog breed during a food retrieval task, suggests a small study published in Scientific Reports.

The sensitivity of the brain to insulin may be modulated by menstrual cycle phase, a paper published in Nature Metabolism suggests. The findings are based on a randomized clinical trial involving 11 women.

A 58-year-old man this week became the world’s second patient to receive a transplant of a genetically modified pig heart, the latest milestone in a growing field of medical research.

A single brain is unfathomably complex. So brain researchers, whether they’re looking at datasets built from 300,000 neurons in 81 mice or from MRIs of 1,200 young adults, are now dealing with so much information that they must also come up with new methods to comprehend it. Developing new analysis tools has become as important as using them to understand brain health and development.