PrimaCell* 5 Human Lung FibrOut* 5 Kit^ Kit PrimaCell* 5 Human Lung FibrOut* 5, Fibroblast Inhibitory System (for 500 ml medium), mixture of cis-OH-proline, ricin toxin, gentamycin and formulated serum substitutes, stable at 4-8 degreeC, effective up to 4