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  • Title: Partial purification and characterization of eosinophil chemotactic factors from soluble extract of Fasciola species.
    Author: Horii Y, Fujita K, Owhashi M.
    Journal: Am J Vet Res; 1986 Jan; 47(1):123-6. PubMed ID: 3946890.
    Abstract:
    Eosinophil chemotactic factor (ECF) was partially purified from common liver flukes (Japanese strain of Fasciola sp) by a combination of anion-exchange chromatography on DE52 and gel filtration on Sephacryl S-200. The molecular weight of ECF was estimated to be approximately 27,000 by high-pressure liquid chromatography. The ECF was heat labile (56 and 100 C for 30 minutes) and was not bound with lentil-lectin Sepharose. The results of isoelectric focusing showed that ECF comprises at least 2 components; one was a major ECF with an isoelectric point of 3.1, and the other, a minor ECF with an isoelectric point of 3.8 to 4.5. These results indicate that ECF of common liver flukes are acidic proteins.
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