B6/129 Mouse Lung Mesenchymal Stem Cells are derived from the lung tissues of pathogen-free laboratory adult mice. Mouse Lung Mesenchymal Stem Cells are negative for bacteria, yeast, fungi, and mycoplasma. Cells can be expanded 3-8 passages by the ratio of 1:3 under the cell culture conditions specified by Creative Bioarray. Repeated freezing and thawing of cells is not recommended.
https://www.creative-bioarray.com/b6-129-mouse-lung-mesenchymal-stem-cells-csc-00795l-item-45412.htm