This is a table of permselectivity for different substances in the glomerulus of the kidney in renal filtration. SubstanceApproximate molecular mass (g/mol) Page 761Effective molecular radius (nm)conc. in ultrafiltrate / conc. in blood plasma sodium 23 0.1 1.0 potassium 39 0.14 1.0 chloride 35.5 0.18 1.0 water 18 0.15 1.0 urea 60 0.16 1.0 glucose 180 0.33 1.0 sucrose 342 0.44 1.0 polyethylene glycol 1,000 0.70 1.0inulin 5,200 1.48 0.98lysozyme 14,600 1.90 0.8myoglobin 16,900 1.88 0.75 lactoglobulin 36,000 2.16 0.4 egg albumin 43,500 2.80 0.22Bence Jones protein 44,000 2.77 1.0hemoglobin 68,000 3.25 0.03serum albumin 69,000 3.55 <0.01
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