hub sciencedirect scopus applications register login login go to scival suite username: password: remember me | not registered? Forgotten your username or password? Go to athens / institution login remote access activation home publications search my settings my alerts shopping cart help export citation purchase more options... Email article signed up for journal alerts [remove] alert me about new articles in this journal your selection(s) could not be saved due to an internal error. viagra 100 wikipedia Please try again. cheapest price on viagra Search     all fields     author advanced search     journal/book title     volume   issue   page search tips article outline is loading... buy viagra cheap Javascript required for article outline molecular genetics and metabolism volume 69, issue 4, april 2000, pages 323–330 regular article homozygous variegate porphyria in south africa: genotypic analysis in two cases ☆ a. V. viagra cost Corrigall, r. J. Hift, l. M. cheap generic viagra Davids, v. cheap viagra Hancock, d. Meissner, r. viagra online without prescription E. buy viagra zimbabwe Kirsch, p. N. Meissner lennox eales porphyria laboratories, mrc/uct liver research centre, department of medicine, university of cape town medical school, observatory, 7925, south africa received 20 december 1999 revised 21 january 2000 available online 15 march 2002 how to cite or link using doi permissions & reprints view full text purchase $41. 95 abstract variegate porphyria is an autosomal dominant disorder of heme metabolism which results from decreased activity of the enzyme protoporphyrinogen oxidase. viagra coupon Clinically, the disease manifests postpubertally and is characterized by photocutaneous sensitivity and/or acute neurovisceral crises. However, in homozygous variegate porphyria, onset of the disease usually occurs in infancy with severe skin manifestations. The molecular basis of variegate porphyria in two severely affected probands in two south african families is described. which is better viagra viagra or viagra Mutation detection included combined sscp-heteroduplex analysis followed by direct sequencing. The unrelated probands both had the common r59w mutation while the other lesion was y348c or r138p (both novel mutations), causing homozygous variegate porphyria. Keywords homozygous variegate porphyria; variegate porphyria; porphyria; mutations; protoporphyrinogen oxidase; heme biosynthesis there are no figures or tables for this document. viagra 100 wikipedia ☆ th. viagra patient information sheet viagra 100 wikipedia