Browsing by Author "Aslund, L."

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    Cloning and characterization of a repetitive DNA sequence specific for Wuchereria bancrofti
    (American Society of Tropical Medicine and Hygiene, 1994) Siridewa, K.; Karunanayake, E.H.; Chandrasekharan, N.V.; Abeyewickreme, W.; Franzen, L.; Aslund, L.; Pettersson, U.
    A genomic library constructed in a bacteriophage lambda replacement vector (EMBL3) with Wuchereria bancrofti DNA partially digested with Sau 3A I was screened with 32P-labeled W. bancrofti total DNA, and a strongly reactive recombinant, EMBL3Wb34, was isolated. This clone contained an approximately 16-kb insert that showed some cross-hybridization with Brugia malayi and B. pahangi DNA. However, a 969-bp subclone from EMBL3Wb34, designated pWb12, hybridized only with W. bancrofti DNA and was able to detect as little as 300 pg. Furthermore, pWb12 could detect DNA from a single infective larva or one microfilaria. It has a moderate copy number (450-700) and appears to be interspersed within the parasite genome. The nucleotide sequence contains 66% A+T and 34% G+C and shows no notable internal repeats.