Stratos Genomics said today that it has raised an additional $2.1 million from existing shareholders. The money, which follows a $4 million round last summer, was provided by existing investors.

“We are fortunate to have great results and supportive investors,” Stratos Genomics CEO Allan Stephan said in a statment. “Our shareholders recognize that we are entering an exciting phase and don’t want our validation pace interrupted by external fundraising activities.”

Founded in 2007, the company is a spin off of Seattle-based Stratos Group. Last month, the company said that it was granted a patent on “High Throughput Nucleic Acid Sequencing by Expansion.” The technology includes a method for converting DNA into a more easily-read polymer, making it cheaper and faster to sequence DNA.

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