抗生素是一种能够杀死或抑制细菌生长的药物。最广泛使用的抗生素是四环素,美国微生物学家威廉·阿尔伯特于1948年,首次描述在密苏里的干草地里的细菌中发现了这种抗生素。许多年后,美国研究人员在将一具非洲木乃伊置于紫外线下照射时,观察到黄绿色的光。这种光就意味着该木乃伊曾经与四环素接触过——四环素的成分已经与骨 An antibiotic is a drug that kills or inhibits bacterial growth. The most widely used antibiotic is tetracycline, and the American microbiologist William Albert discovered the antibiotic in 1948 when it was first described in bacteria in dry grass in Missouri. Many years later, American researchers observed a yellowish-green light when exposed an African mummy to ultraviolet light. This light means that the mum had contact with tetracycline - tetracycline composition has been with the bone