재료 자체뿐 아니라 주변 생체조직과 미묘한 상관관계를 맺고 있다.최근 조직공학(tissue engineering) 분야에서는 환자의 연골세포를 체외에서 배양, 연골조직으로 만들어 다시 환자의 손상부위에 이식하는 기술이 개발되고 있다. 이는 환자의 다른 연골조직에 손상을 주지 않고 세포만 채취해 ...
이상이 생겨 고통받는 환자들의 수는 늘어가는 추세다. 어떻게 해야 할까.최근 조직공학(tissue engineering)을 이용해 ‘기능성 장기’를 만드는 일이 진행되고 있어 희망을 주고 있다. 인체 장기의 기능을 수행하는 기본 단위는 조직이다. 조직은 한 종류 또는 여러 종류의 세포들로 구성돼 있다. ...
Research Institute in Fort Detrick, Md.These scientists isolated the virus and grew it in the laboratory, using a tissue culture of cells from a deer mouse caught in the house where someone had died of the disease. It turned out that deer mice-currently having a population explosion in the American West-carry the disease, one of the hantaan viruses that originally came from the Orient. Now ...
betterment and prolongation of life. Some aspects of life extension involve replacements of diseased or defective body tissues like faulty heart valves. Frozen parts are the thing, but that's always been difficult. Now the U.S. company Cryolife, Inc., of Marietta, Ga., has devised a method of freezing that works better. First they feed the tissue(like a vein, or a heart valve) by putting it ...
γ)-인터페론을 유전공학적으로 개발해 특허를 받았다.조직 플라스미노겐 활성소(TPA, tissue plasminogen activator)는 치명적인 심근경색이나 뇌경색의 원인이 되는 혈전(핏덩어리)을 녹여주는 물질이다. 쉽게 말해 막힌 혈관을 시원하게 뚫어주는 약이다. 이 약의 열렬한 팬중 한사람인 연세대 심장내과 ...
observed so easily. Amphibian eggs figured large in the works of zoologist Ross G. Harrison of Yale, the inventor of tissue culture, and of Hans Spemann of Germany, the discoverer of the organizer in embryology.Studies of amphibians go oa In a recent issue of Nature, Indiana University biologists John B. Phillips and S. Chris Borland explain for the first time how an animal uses "magnetic ...
시각장애(원시)와 함께 나타나는 것으로 보고되는 경우도 적지 않다.연부조직육종(soft tissue sarcoma)은 희귀하게 나타나는 암의 일종으로 이 병은 잠복기가 고엽제 후유증 중에서도 특히 길어 대개 15년이상으로 추정된다. 연부조직육종은 다이옥신이 들어있는 제초제를 사용한 사람들의 경우 5, 6배 ...
giant whales that may weigh up to 150 tons.(Some plants are heavier still but most of a tree is supporting woody tissue that is not truly alive, whereas animals consist almost entirely of living tissue.)In a way, this puts us in our place. After life began, about 3.5 billion years ago, life forms remained single-celled and prokaryotic for over two billion years. Only about 1.4 billion years ...
whose exact nature has not yet been identified, but which are probably related to the kind of material found in living tissue.It follows that if the meteorite did indeed come from Mars and if it is representative of the Martian surface, then there must be organic compounds in that surface, regardless of the tests conducted by the Viking probes. After all, the Viking probes landed on two very ...
of anywhere from a dozen to several hundred amino acids. In general, amino acids on Earth are produced only by living tissue.In that case, there should be nothing particularly. unusual about finding amino acids in materials that were laid down 65 million years ago. After all, there was plenty of life then and all the forms of life were forming amino acids. Why shouldn't some be found?Well, ...