醫學、人與社會
醫學是為人服務的社會科學。它與人、社會之間有著絲絲縷縷密不可分的聯係。醫學的進步可以給人類帶來福音，也可能在社會上引起軒然大波。對避孕知識的正確了解可解除流產之痛，對自身的正確認識可幫助你控製體重。然而基因工程的小小一步——克隆，卻使人類社會爭論、迷惑，它究竟是福還是禍？
1.Blood Groups
血型
我們全身都流動著鮮紅的血液。它負擔著運來營養和送走垃圾的重任，是新陳代謝中重要的一環。您一定看過日本電視劇《血凝》，一定知道，血液、血型不僅在生理學上至關重要，更在家庭與社會中扮演著一定的角色。人是怎樣造血的？A、B、O血型之間怎麼輸血？血型與疾病有關嗎？看看這一節吧！
(1)Blood Groups in Medicine
血型在醫學中的應用
Blood groups are classification of blood based on inherited differences in antigens1 on the surfaces of the red cells.Inherited differences of white cells，platelets2，and plasma3 proteins also constitute blood groups.
The discovery of ABO blood group system in 1901 was the result of deliberate search for interspecies differences among humans.The application of knowledge of the ABO system in blood transfusion practice is of enormous importance since mistakes can have fatal consequences.
The blood groups are an important means of identifying an individual.Their relevance in medicine lies in the practice of blood transfusion and in the effects of incompatibility between mother and child and the pathogenesis4of hemolytic disease of the new born.
注釋：
1.antigen 抗原
2.platelet 血小板
3.plasma 血漿
4.pathogenesis 發病機理
譯文
血型在醫學中的應用
血型是按紅細胞表麵抗原的遺傳差異來劃分的。白細胞，血小板和血漿蛋白的遺傳性差異也形成了血型上的差異。
1901年進行的一次人種差異的特別研究發現了ABO血型係統。在輸血中應用ABO血型係統知識至關重要，因為輸血失誤可能置人於死地。
血型是鑒別個體的重要性手段，它的醫學重要性表現在輸血應用中，它還有助於發現母嬰之間血液不相容帶來的後果及新生兒溶血性疾病的發病機理。
(2)How Do Our Bodies Make Blood？
人體怎樣造血？
Every second of every day，you manufacture 10 million new red blood cells.Add to this stream a large dose of white blood cells，millions of platelets and an assortment of nutrients.How does the body coordinate these components into the finely blended mixture we call blood？
Close to half your blood is made up of red cells，white cells and platelets，all of which incubate in the bones.Each of these life-sustaining agents begins as a stem cell，a sort of hematological embryo that idles in the marrow until ordered to develop into one of the three discrete blood cell types.