(2017·哈尔滨中考)
Drugs come in different forms. However, can you imagine that drugs come in chicken eggs? A team of scientists from England prove that it can come true. They have developed special chickens that lay eggs with drugs inside. These special drugs can help treat some kinds of diseases. Until now, they have made two kinds of drugs. One drug can treat skin cancer and the other can treat a nerve disease(神经性疾病).
