CHAPEL HILL – Altis Biosystems, a Chapel Hill-based biotech research tools company, has raised just north of $3.1 million from a total of 42 investors.

According to an SEC firm, Altis previously had raised $934,592 from seven investors.

“We consider our platforms to be the next generation in compound screening,” says Michael Biron, CEO and co-founder of the company.

The firm is currently developing a stem cell co-culture cassette for advanced compound screening to make drug discovery faster and cheaper. The project is sponsored by the National Institutes of Health, Department of Health and Human Services.

Read the filing online.