We made some improvements on the in situ hybridization protocol for EB virus (EBV) detection so that many general laboratories in Japan are able to perform the procedure. Using FITC-labeled EBER-PNA probes (DAKO), we examined dilutions of several chemicals and the incubation temperature of the probes in tissue sections. We confirmed the accuracy and reproducibility of our protocol by applying PCR to detect EBV genomes within tissue sections. We applied the technique to 55 laboratory samples which were suspected to be infected with EBV, and eight negative control and successfully ended up with pathological diagnosis. Moreover, coupled with immunohistochemical detection of LMP-1, we could determine the type of EBV infection.

This paper reports the clinical findings and surgical treatment of feline right patent ductus arteriosus (RPDA) with a left aortic arch. A two-month-old female Maine Coon was referred for an investigation of regurgitation after weaning. RPDA with a left aortic arch was diagnosed based on the echocardiographic and computed tomography (CT) findings.A right-fourth intercostal thoracotomy was found to be an appropriate approach to the duct. Preoperative diagnosis is crucial and diagnostic imaging, including radiography, echocardiography, and cardiac CT examination, is essential for determining if the aortic arch is right or left.