Makers of medical device implants and diagnostic products proved health care was no monolith after broadly outperforming the U.S. market and their health care brethren in 2018. But 2019 is shaping up quite differently through the first day of trading amid a spotlight from a variety of investment banks.

Japan’s Fujifilm Holdings Corp will buy a drugmaking business from U.S.-based Biogen Inc for about $890 million to try to bolster its healthcare business as growth at its legacy photocopy operations stagnates.

Cerebral organoids, also sometimes called mini-brains or brain organoids, have become an important and useful tool in understanding human brain development and disease.

The Apple Watch was able to detect irregular heart pulse rates that could signal the need for further monitoring for a serious heart rhythm problem, according to data from a large study funded by Apple Inc (AAPL.O), demonstrating a potential future role for wearable consumer technology in healthcare.