CREP (Collection of Reproductive Tract Microorganisms) is a collection of microbial strains and microbiota samples of reproductive tract that is situated at the Competence Centre on Health Technologies. The collection was founded in 2009. The strains and microbiota samples originate from reproductive tract of healthy, diseased and infertile women, men and couples. The collection contains both lactic acid bacteria and opportunistic pathogens. The main research activities are related to probiotic development.