Abstract Fibroblasts derived from the progeroid Werner syndrome show reduced replicative lifespan and a "stressed" morphology. both alleviated using the MAP kinase inhibitor SB203580. However. interpretation of these data is problematical because although SB203580 has the stress-activated kinases p38 and JNK1/2 as its preferred targets. https://globechemicalcompanyls.shop/product-category/health-supplies/