Researchers have developed a method that shows how the nervous system and sensory organs are formed in an embryo. By labeling stem cells with a genetic 'barcode', they have been able to follow the ...

Researchers at Karolinska Institutet have developed a method that shows how the nervous system and sensory organs are formed in an embryo. By labeling stem cells with a genetic "barcode," they ...

A lump behind the ear can have many possible causes. The most common include swollen lymph nodes caused by an uncomplicated infection. These lumps are typically harmless and relatively easy to treat.