As it nears the end of a growth era, Cleveland's health care industry may be planting the seeds of tomorrow's jobs. The $14 billion industry is expected to plateau soon, at about 183,000 jobs in hospitals, doctors' offices and outpatient centers, according to a new report. But economic development specialists are more intrigued by what's happening in research labs. Investment in medical research and innovations has nearly doubled in the Cleveland-Akron region since 2000, to reach $660 million a year, according to an analysis by Team Northeast Ohio.