Tick bites can cause Lyme disease.被蜱叮咬会引发莱姆病。Lyme had its hey - day in the Middle Ages and has been declining ever since.莱姆镇在中世纪曾名噪一时,但从那以后便日渐衰落.Objective To explore the relationship between Lyme disease and tick.目的探讨重要媒...
In institutions with cytopathology available for on - site consultation, fine - needle aspirates are often adequate for diagnosis.在一些机构中,通过病理学家的现场咨询, 细针抽吸通常能够得到足够诊断的样本....
8星期大的胚胎只有一英寸长。An eight-week-old embryo is only an inch long.胚胎研究是个容易引起激烈争论的问题。Embryo research is an emotive issue.胚胎的性别早在受精时就决定了。The sex of the embryo is predetermined at fertilization....