Ampersand Capital Partners has completed an investment in AnaBios Corp., according to a news release.

AnaBios, based in San Diego, is preclinical contract research organization. Founded in 2009, the company’s research focuses primarily on areas including cardiac disease and safety, pain, polycystic kidney disease and neurodegeneration.

Ampersand, based in Wellesley, Mass., is a middle market private equity firm with a focus on growth equity investments in the healthcare sector. Founded in 1988, the firm typically pursues majority or minority positions in companies generating between $10 million and $100 million in revenue.

Terms of the investment were not disclosed.