Hi, My name is Gabriela Hernandez, I am student of Veterinary Medicine in Costa Rica at Universidad Nacional (UNA) I am making my thesis related to Brucella spp. in doplhins, we are developing and ELISA for these deseasse as part of the Program of Investigation of tropical deseasses (PIET), I need a positive control serum from doplhin that have show to be positive for brucella spp, to compare with the results that we have been working here. I really appreciate if someone can help me with these serum. Let me know any question or information about it, at gabbytica@gmail.com. Thanks.