Abstract: The present invention has an object of providing a composition that is effective for the treatment of a prototheca disease. According to the present invention, a composition containing ravuconazole as an active ingredient, which is administered to an animal suffering from a prototheca disease caused by Prototheca wickerhamii or Prototheca zopfii, is provided.

Abstract: An object of the present invention is to provide an antifungal agent which is effective against cryptococcosis. The present invention provides an antifungal agent comprising ravuconazole as an active ingredient, wherein the agent is administered to an animal suffering from cryptococcosis. Further, the present invention provides an antifungal agent comprising ravuconazole as an active ingredient, wherein the agent is administered to an animal suffering from cryptococcus that is resistant to triazole-based antifungal agents selected from the group consisting of fluconazole, itraconazole and voriconazole.

Abstract: It is intended to clarify the CD20 amino acid sequence and its gene sequence which are essentially required in constructing an anti-CD20 antibody useful in treating animal malignant lymphoma. It is also intended to provide a method of diagnosing canine malignant lymphoma by using the CD20 gene sequence. Using monocytes in canine blood as a sample, mRNA is obtained and the full base sequence of canine CD20 gene (SEQ ID NO:2) is determined. Based on this sequence, its amino acid sequence (SEQ ID NO:1) is determined. Comparing the homologies with human and mouse CD20 genes and amino acid sequences, it is identified as canine CD20 gene. Moreover, a primer specific to the canine CD20 gene is constructed and the expression of the CD20 gene in a sample is examined, thereby giving a method of diagnosing canine B lymphocyte-origin malignant lymphoma.

Abstract: It is intended to clarify the CD20 amino acid sequence and its gene sequence which are essentially required in constructing an anti-CD20 antibody useful in treating animal malignant lymphoma. It is also intended to provide a method of diagnosing canine malignant lymphoma by using the gene sequence. Using monocytes in canine blood as a sample, mRNA is obtained and the full base sequence of canine CD20 gene (SEQ ID NO:2) is determined. Based on this sequence, its amino acid sequence (SEQ ID NO:1) is determined. Comparing the homologies with human and mouse CD20 genes and amino acid sequences, it is identified as canine CD20 gene. Moreover, a primer specific to the canine gene is constructed and the expression of the CD20 gene in a sample is examined, thereby giving a method of diagnosing canine B lymphocyte-origin malignant lymphoma.