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  • Title: Leucokinetic study. Morphology of the bone marrow and blood after experimental induction of marrow hypoplasia by cyclophosphamide in laboratory rats.
    Author: Berger J.
    Journal: Folia Haematol Int Mag Klin Morphol Blutforsch; 1980; 107(6):862-77. PubMed ID: 6162752.
    Abstract:
    Experimental hypoplasia of femoral bone marrow in rats was induced by cyclophosphamide, injected i.p. at various clock hours (08.00, 12.00, 16.00, 20.00, 24.00, and 04.00). Cyclophosphamide-induced neutropenia persisted for six days and was followed by transitory granulocytosis with subsequent decrease in the cont of circulating mature granulocytes. The absolute counts of circulating segmented neutrophils changed in parallel with the absolute counts of segmented neutrophils in the bone marrow. The count of circulating neutrophils was not essentially influenced by the clock hour of cyclophosphamide injection. The toxic action of cyclophosphamide upon the bone marrow exhibited a circadian rhythmicity: the greatest decrease in the count of nucleated marrow cells was found in the morning, and the least, in the evening. The minimal compartment transit times of the development stages of bone-marrow neutrophils, and the daily granulocyte production in the rat were calculated.
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