Southwestern blot analysis of the mouse liver polysomal proteins from young (A, 4 mo) and aged (B, 28 mo) old livers. (A) Lane 1, control NE; lane 2, LPS-treated NE; lane 3, control polysomal proteins; lane 4, polysomal proteins 3 h after LPS treatment. (B) Lane 1, control NE; lane 2, LPS-treated NE; lane 3, control polysomal proteins; lane 4, polysomal proteins 3 h after LPS treatment; lane 5, polysomal proteins 6 h after LPS treatment.