نتایح جستجو

C H R O M O S O M E 18 C u r e s Our doubts are traitors, And make us lose the good we oft might win, By fearing to attempt. William Shakespeare, Measure for Measure سهم من در ترجمه کتاب...............امیدوارم بد نبوده باشه.موفق باشید...امروز دیدم آقای دیجی نوشتن تا 30 مرداد...

Consider a gene on chromosome 18 that suppresses colon cancer. We have already met it briefly in the last chapter: a tumour suppressor whose location has not quite been determined for sure. It was thought to be a gene called DCC, but we now know that DCC guides the growth of nerves in...

There was an immediate surge of public concern and it was not confined to lay people.Scientists themselves thought it right to pause before rushing to exploit the new technology.They called a moratorium on all genetic engineering in 1974, which only fanned the flames of public worry:if...

There are, of course, short cuts. One is to ignore the ninety-seven per cent of the text that is silent -the selfish DNA,the introns, repetitious minisatellites and rusting pseudogenes -and concentrate on the genes alone.The quickest way to find such genes is to clone a different sort...

Throughout the early1980s, scientists worried about the safety of such a procedure.The retrovirus might work too well and infect not just the ordinary cells of the body, but the reproductive cells, too. The retrovirus might reacquire its missing genes somehow and turn virulent; or it...

By 1990, Anderson and Blaese were back before the committee with a more ambitious scheme. This time the gene would actually be a cure, rather than just an identification tag. The target was an extremely rare inherited disease called severe combined immune deficiency (SCID), which rendered...

In September 1990, Anderson and Blaese got the go-ahead and treated Ashanthi DeSilva, a three-year-old girl, with genetically engineered ADA. It was an immediate success. Her white-cell count trebled, her immunoglobulin counts soared and she began making almost a quarter of the ADA that an...

The genetic engineering of plants took off rapidly for several reasons. The first was commercial: farmers have for many years provided an eager market for new seed varieties. In ancient prehistory, conventional breeding had turned wheat, rice and maize from wild grasses to productive crops...

The media, as usual, rapidly polarised the debate with shouting matches between extremists on late-night television and interviews that forced people into simplistic answers: are you for or against genetic engineering? The issue reached its nadir when a scientist was forced to take early...

None the less, and even allowing for the cautious cancellation of many projects, it is a safe estimate that by the year 2000, fifty to sixty per cent of the crop seed sold in the United States will be genetically modified. For better or for worse, genetically modified crops are here to stay...

Transgenic mice are scientific gold dust. They enable scientists to find out what genes are for and why. The inserted gene need not be derived from a mouse, but could be from a person: unlike in computers, virtually all biological bodies can run any kind of software. For instance, a mouse...

It all sounds rather easy. The technical obstacles to breeding a transgenic or a knockout human being are becoming trivial for a 256 G E N O ME good team at a well-equipped laboratory. In a few years from now you probably could, in principle, take a complete cell from your own body...

سلام....تمام خصوصیاتی که گفتید رو شایسته تمام کسانی میدونم که در انجمن به من کمک کردن در هر تاپیک مختلفی.................پس همانها هم مهربانترینن هم دلسوز هم جدی.مودب.منطقی.احساسی.باسواد.با جنبه.فعالترین آذر.ویدا.آشل.سنیوریتا.دریا.آریانا.مامان متین.رویا.مامایی.هایدی.mf2009.هامویت.بیوستا.مهسا.نگار.

با سلام و خسته نباشی خدمت همه شما دوستان و تبری عید فطر به همه شما من با mf2009آقا محمد زیاد آشنایی نداشتم..................................ولی بخاطر محبتی که خالصانه و بی دریغ به همه بچهای انجمن برای درس زبان انجام داد همیشه دعا میکنم هرجا هستن سالم و تندرست باشن.........واقعا بزرگترین لطف را...

صادقانه ترین احساس را در صادق ترین عید خدا به صدیق ترین آشنای بی مدعا تقدیم میکنم.............عیدت مبارک

رمضان رفت ولی کاش صفایش نرود.سحرو جوشن و قرآن و دعایش نرود.کاشکی پر شده باشد دلم از نور سحر.همره روزه و افطار نوایش نرود.عید سعید فطر بر شما و خانواده محترم مبارک باد آبجی نازنینم

سلام دوست همیشه بهارم....تولدت مبارک

ممنونم عزیزم

سلام دریا جان...خوبی...عسل چطوره؟اگر بهت خبر ندادم میدونستم نمیتونم خودمو کنترل کنم..............میبینی چی شد...........................واقعا سخته..........................هرگاه میام انجمن بیشتر دلم میگیره.............................فکرش که میکنم..... دریا جان همیشه نباید وقتی موفقیتی بدست...

سلام گل بهارم......میبینی چی شد...........................واقعا سخته..........................هرگاه میام انجمن بیشتر دلم میگیره.............................فکرش که میکنم..........