<s>[INST] Given an abstract text, please determine whether it contains any drug mentions. Provide a 'Yes' or 'No' answer based on the presence or absence of drugs. Abstract Text: A Phase Ib/IIa Study Of Remestemce-L, An Allogeneic Bone Marrow Derived Mesenchymal Stem Cell Product, For The Treatment Of Medically Refractory Ulcerative Colitis: An Interim Analysis[/INST] Yes</s>