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Clinical Chemistry, Vol 11, 563-569, Copyright © 1965 by the American Association for Clinical Chemistry
1 Rappaport Laboratories (Biochemical Section), Beilinson Hospital, Petah Tiqva, Israel.
An easy procedure for the estimation of 3,4-dihydroxyphenylalanine (dopa), 3,4-dihy-droxyphenethylamine (dopamine), and homovanillic acid (HVA), besides 3-methoxy-4-hydroxymandelic acid (VMA), by means of the "two solutions paper electrophoresis" (1) is described. Increased amounts of these phenolic compounds were found by this method in the urine of a patient with neuroblastoma, and the case report is presented.
Submitted on June 1, 1964
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