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  • Column liquid chromatography  (1)
  • Cutaneous haematopoiesis  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 157 (1998), S. 932-934 
    ISSN: 1432-1076
    Keywords: Key words Blueberry muffin ; Fetomaternal haemorrhage ; Cutaneous haematopoiesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Blueberry muffin lesions are associated with prenatal infections, severe and chronic anemia and neoplastic infiltrative diseases. In the first two instances they represent postnatal re-expression of cutaneous haematopoiesis, in the latter they are cutaneous localizations of a neoplastic disease. Chronic prenatal anaemia leading to blueberry muffin lesions in the neonate has been reported in association with severe haemolytic anaemia such as congenital spherocytosis, Rhesus haemolytic disease and ABO incompatibility, or in anaemia caused by twin-to-twin transfusion. We present two more causes of prenatal anaemia leading to blueberry muffin lesions: chronic fetomaternal haemorrhage and severe intracranial bleeding. Conclusion In any blueberry muffin baby with profound anaemia, chronic fetomaternal haemorrhage and severe internal bleeding should be included in the differential diagnosis. Skin biopsy must be performed to rule out neoplastic infiltrative diseases.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1612-1112
    Keywords: Column liquid chromatography ; Chlortetracycline ; Reversed-phase silical gel ; C8 bonded phase ; Collaborative study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary An established method for the analysis of chlortetracycline by liquid chromatography using octylsilylated silica gel as the stationary phase was examined in a multicentre study involving five laboratories and a total of six columns. Three chlortetracycline hydrochloride samples were analysed. The main component and the impurities were determined. An analysis of variance, treating each column as a different laboratory, showed an absence of consistent between-laboratory bias and the presence of a significant laboratory-sample interaction. The repeatability and the reproducibility of the method, expressed as relative standard deviations of the result of the determination of chlortetracycline hydrochloride, were calculated to be 0.9% and 1.1% respectively.
    Type of Medium: Electronic Resource
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