Résumé
Two giant pandas (Ailuropoda melanoleuca) died of unknown causes in a Chinese zoo. The clinical disease profile suggested that the pandas may have suffered a viral infection. Therefore, a series of detection including virus isolation, electron microscopy, cytobiological assay, serum neutralization and RT-PCR were used to identify the virus. It was determined that the isolated virus was a canine coronavirus (CCV), on the basis of coronavirus, neutralization by canine anti-CCV serum, and 84.3% to 100% amino acid sequence similarity with CCV. The results suggest that the affected pandas had been infected with CCV.
Sujets)
Animaux , Femelle , Mâle , Séquence d'acides aminés , Maladies de l'animal/virologie , Animaux de zoo/virologie , Infections à Coronaviridae/médecine vétérinaire , Coronavirus canin/génétique , Issue fatale , Données de séquences moléculaires , Alignement de séquences , Similitude de séquences d'acides aminés , Ursidae/virologie , Protéines virales/composition chimiqueRésumé
Gene engineering is the main course of biological engineering. It should be adapted to the demand of innovation spirit, practice ability and comprehensive quality of students. Educational reform of gene engineering conducted by constructing system of theory and practice, optimizing course teaching content, strengthening practice teaching content, using modern teaching technology, strengthening web course construction and improving teaching methods. We pay attention to impart specialty knowledge and learning methods to students. Its aim was to increase teaching effects and meet the demands of bioengineering specialty and qualified personal training in 21 century.