The present invention is a method and a method for producing erythropoietin, erythropoietin transformation from cocoon to relates to the resulting erythropoietin, more specifically to erythropoietin producing an expression vector comprising the gene and by introducing the expression vector to a method for producing a transgenic silkworm silkworm, obtained by breeding said transgenic silkworm transformed silkworms method of obtaining the erythropoietin from the cocoon and to the erythropoietin obtained by the method.
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