Abstract
Vol. 26
p 374: Second column, line 1: "designated," not "designed."
p 457: First line of abstract: correct number is "2.7.3.2"; second paragraph under "Serum Samples": "mammary artery," not "mammary vein."
p 458: Under "Column Chromatography," line 9 to read "buffer (200 mmol/L NaCl, 50 mmol/L Tris-HCl)..." Sublegend to Figure 1: add "a, concentration gel; b, separation gel." Under "Isoelectric Focusing," line 6 should read "7 mg of ammonium persulfate, 0.1 mL of pH 4-6 carrier ampholyte, and 0.1 mL of pH 5-7 ampholyte."
p 485:last paragraph: insert "98" before "(29.4%)," delete "low value," change "(6.5%)," to "(6.3%)," and change "µ/L" to "µg/L."