Several investigational compounds have been shown to be toxic to the liver, a challenge that highlights the difficulty in developing drugs for conditions that affect the brain.

WSJ: Fresh Target in Hunt for a Migraine Cure

Development Programme, points out the difficulty of getting and transporting replacement parts for UV Waterworks systems in developing countries.

FORBES: Magazine Article

He came from the Kampong Cham province in central Cambodia and died after developing fever, coughing and difficulty breathing earlier this month.

CNN: Cambodia sees spike in bird flu deaths

They also believe that techniques used to block this gene in mice could be used on humans, including those who have difficulty developing muscles.

BBC: Myostatin controls the growth of muscles