conceptual biomedical illustration of the bacterial disease pertussis, also known as whooping cough - 球桿菌 幅插畫檔、美工圖案、卡通及圖標
microscopic view of yersinia. yersinia is a gram-negative, rod-shaped bacteria in the family enterobacteriaceae. - 球桿菌 幅插畫檔、美工圖案、卡通及圖標