病毒

• Formaldehyde slowly inactivates many viruses .
  甲醛能慢慢使多种病毒失去活性。
• There are also some virus strains .
  此外还有一些病毒品种。
• Most viruses can be lyophilized .
  大多数病毒都能经受冻干。
• The bluetongue virus replicates in the insect .
  蓝舌病病毒在这种昆虫体内繁殖。
• Virus particles differ in shape .
  病毒颗粒有不同的形状。
• The two components of virus spread can be separated .
  病毒的两种扩散方式可以分开。
• Animals may serve as a vehicle for viral transmission .
  动物可能成为病毒传播的媒介。
• Viruses are colloidal particles .
  病毒呈胶体颗粒。
• The scrapie agent in sheep may be similar to viroids .
  绵羊的搔痒病因子可能也是类病毒。