  
      
        
          
             
            Ebola virus-infected cell (left panel)  
Scanning electron micrograph of a cell infected with Zaire ebolavirus. 
The cell surface is covered with numerous filamentous Ebola virus particles. 
 
Influenza A virus particles (right panel) 
Negative-stain electron micrograph of purified influenza A virus,A/Puerto Rico/8/34 (H1N1). 
Haemagglutinin spikes are present on the virion surface. | 
           
          
             
              
            The Japanese Society for Virology 
  | 
           
        
       
       |