Expanded graphite were added in PDA medium to observe the growth of Aspergillus niger, and in beef extract peptone medium to observe the growth of Staphylococcus aureus.

• 摘要向PDA培养基中加入膨胀石墨观察黑曲霉的生长，向牛肉膏蛋白胨培养基中加入膨胀石墨观察金黄色葡萄球菌的生长。