“…Some disagreement exists concerning the upper normal limit of erythrocyte protoporphyrin, vary ing from 20 to 65 11g/ 100 ml red cells (6,10). Some authors regard 50-52 µg/ 100 ml red cells as the upper normal limit (3, 5, I 6, 18).…”
“…Some disagreement exists concerning the upper normal limit of erythrocyte protoporphyrin, vary ing from 20 to 65 11g/ 100 ml red cells (6,10). Some authors regard 50-52 µg/ 100 ml red cells as the upper normal limit (3, 5, I 6, 18).…”
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