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Legionella contamination of dental-unit waters
- R. Atlas, J. F. Williams, M. Huntington
- Biology, MedicineApplied and Environmental Microbiology
- 1 April 1995
Water samples collected from 28 dental facilities in six U.S. states were examined for the presence of Legionella pneumophila and other Legionella spp. by the PCR-gene probe, fluorescent-antibody…
Purification of lipoprotein antigens of Echinococcus granulosus from sheep hydatid fluid.
- R. Oriol, J. F. Williams, M. V. Pérez Esandi, C. Oriol
- Biology, MedicineAmerican Journal of Tropical Medicine and Hygiene
- 1 July 1971
A simple two-step procedure was devised for the preparation of a fraction of sheep hydatid fluid containing two major lipoprotein antigens, finding the degree of contamination by host serum proteins to be in the region of 1.6%.
Ivermectin distribution in the plasma and tissues of patients infected with Onchocerca volvulus
- O. Baraka, B. Mahmoud, C. K. Marschke, T. Geary, M. Homeida, J. F. Williams
- Medicine, BiologyEuropean Journal of Clinical Pharmacology
In healthy volunteers, the plasma ivermectin distribution was similar to that in patients, and both groups showed a tendency for a second rise in plasma concentration of the drug suggestive of enterohepatic recirculation, whilst values for skin, nodular tissues, and worms were comparable.
The immunological response of the rat to infection with Taenia taeniaeformis. V. Sequence of appearance of protective immunoglobulins and the mechanism of action of 7Sgamma2a antibodies.
It appears to be the first time that complement has been demonstrated to play a role in immunity to a helminth infection in vivo, and in relation to the phenomenon of cestode parasite survival in immune animals.
Antimicrobial treatment of nylon
The preparation of an antimicrobial nylon material and its properties are discussed and it is shown that the nylon fabrics containing N-chlorinated hydantoin functional groups should find a variety of important uses such as in clothing, carpets, sutures, brushes, and so forth.
The profile of IgG and IgG subclasses of onchocerciasis patients
- T. Dafa’alla, H. Ghalib, A. Abdelmageed, J. F. Williams
- Medicine, BiologyClinical and experimental immunology
- 1 May 1992
The status and score of skin lesions were found to have significant effect on the IgG and IgG subclasses levels (all P < 0·001), and lgG4 showed a positive correlation with the microfilarial (Mf) load (r= 0·21, P< 0·03).
Microbial contamination of dental unit waterlines: origins and characteristics.
- J. F. Williams, J. Molinari, N. Andrews
- Biology, MedicineCompendium of continuing education in dentistry
- 1 June 1996
The medical risk of dental unit waterline contamination is most significant to immune-deficient individuals, and regulations and technological devices are emerging to manage dental water quality.
Microbial contamination of dental unit waterlines: short- and long-term effects of flushing.
- J. I. Santiago, M. Huntington, A. M. Johnston, R. Quinn, J. F. Williams
- MedicineGeneral dentistry
The extensive microbial contamination of DUW in this study is consistent with that described in previous reports and the presence of hemolytic staphylococci and streptococci in water samples from lines that were supplied only from sterile water reservoirs adds to the growing evidence that part of the microbial flora in DUWLs may be derived from patients' mouths.
Severe onchocercal dermatitis in the Ethiopian border region of Sudan.
- H. Ghalib, C. Mackenzie, M. Kron, J. F. Williams, M. el Khalifa, H. E. El sheikh
- MedicineAnnals of tropical medicine and parasitology
The prevalence values of O. volvulus infection in the two villages were significantly increased when, in addition to microfilarial presence in skin biopsies, onchocercal signs such as punctate keratitis, nodule presence andmicrofilariae in the anterior chamber were taken into consideration.
Angiostrongylosis in a greyhound.
- J. F. Williams, B. Lindemann, G. Padgett, O. L. Smith
- Medicine, BiologyJournal of the American Veterinary Medical…
- 15 May 1985
Hemorrhages, widespread in subcutaneous tissue and muscle masses and at serosal surfaces, were suggestive of the onset of the bleeding disorder that has been seen in angiostrongylosis in Europe.