Japan's Fujifilm Holdings Corp said it has agreed to acquire U.S. biotechnology firm Cellular Dynamics International Inc (CDI) for $307 million.

Under the deal, which was approved by both companies' boards, Fujifilm will make a tender offer for all of CDI for $16.5 per share, the Japanese firm said in a statement.

Originally a maker of photo films, Fujifilm has been aggressively expanding its medical equipment and pharmaceuticals businesses recent years.

In 2008, it bought Toyama Chemical Co, whose drug Avigan has been drafted in the global fight against Ebola.

In November, Fujifilm said it planned to spend 400 billion to 500 billion yen ($3.3-4.2 billion) on M&A deals over the next three years as part of efforts to boost its healthcare operations.