On the cover: Renal collagen deposition. Renal sections were stained with Sirius red and collagen content was assessed using a standard grading scheme. Collagen content was increased in the aldosterone-treated group and attenuated by magnesium supplementation. Left: Aldo, Right: Aldo+Mg²⁺. Images are representative of 8–9 mice in each group. Magnification: ×100. (See page 915.)