Amoebae, blood cells, chloroplasts, hydra, paramecia, and other microscopic microorganisms wiggle and squirm with fascinating movement in closeup views sure to make you wash your hands.

• 阿米巴虫，血细胞，叶绿体，水螅，草履虫，微生物和其他微观扭动和蠕动与迷人的运动特写意见一定要你洗手。