microscopic view of yellow fever virus. yellow fever is an acute viral disease. - 原生質 幅插畫檔、美工圖案、卡通及圖標
microscopic view of escherichia coli bacteria cells, commonly known as e. coli. - 原生質 幅插畫檔、美工圖案、卡通及圖標
illustration of toxin released into body by bacterium, attaching to body cell and absorbed into fluid cytoplasm, the toxin disrupts normal chemical reactions inside cell preventing it from functioning - 原生質 幅插畫檔、美工圖案、卡通及圖標
stylized rabies virus particles, the cause of the viral neuroinvasive disease acute encephalitis. - 原生質 幅插畫檔、美工圖案、卡通及圖標