Figure 2.

Renal calcium reabsorption during suckling and after weaning. An illustrative representation of the current knowledge. The leftward arrow indicates net movement of calcium from lumen to serosa represents reabsorption. The thickness of the arrow represents relative reabsorption between tubule segments and ages. The dashed line indicates that reabsorption is inferred from expression studies or limited functional studies. Weaning is at 21 days in rodents. PT: proximal tubule; TAL: thick ascending limb; DCT: distal convoluted tubule; CNT: connecting tubule. (A color version of this figure is available in the online journal.)