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      <title>KÖK HÜCRE by </title>
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      <pubDate>2017-04-23 06:52:48 UTC</pubDate>
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         <title>KÖK HÜCRE NEDİR?</title>
         <author>busekaya9206</author>
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         <description><![CDATA[<div>İnsan vücudunda gündelik sağlığımız için önemli yüzlerce farklı tip hücre bulunmaktadır. Bu hücreler vücudumuzun her gün çalışmasını devam ettirmesinden sorumludurlar; mesela, kalbimizin atmasını, beynimizin düşünmesini, böbreklerimizin kanımızı temizlemesini, derimizin dökülürken yenilenmesini, ve bunun gibi işlevleri sağlarlar. Kök hücrelerin eşsiz görevi tüm bu farklı tip hücreleri yapmaktır. Kök hücreler yeni hücrelerin tedarikçileridirler. Kök hücreler bölündüğünde, kendilerinden ya da diğer hücre tiplerinden üretebilirler. Örneğin, derideki kök hücreler daha fazla deri kök hücresi yapabilir ya da melanin pigmenti yapmak gibi kendi özgün işlevleri olan diğer deri hücrelerine farklılaşabilirler.</div><div><br></div><div><br></div>]]></description>
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         <pubDate>2017-04-23 06:55:04 UTC</pubDate>
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         <title>Neden kök hücreler sağlığımız için önemlidir?</title>
         <author>busekaya9206</author>
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         <description><![CDATA[<div>Yaralandığımızda veya hastalandığımızda, hücrelerimiz de yaralanır veya ölürler. Bu durumlarda, kök hücreler etkinleşirler. Kök hücreler, hasar gören dokularımızı onarmak ve rutin olarak ölen diğer hücrelerin yerine yenilerini yapmakla görevlidirler. Bu şekilde kök hücrelerimiz bizi sağlıklı tutar ve bizi erken yaşlanmaktan korurlar. Kök hücreler bizim kendi mikroskopik doktorlar ordumuz gibidirler.</div>]]></description>
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         <pubDate>2017-04-23 06:55:53 UTC</pubDate>
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         <title>Kök hücrelerin değişik çeşitleri nelerdir?</title>
         <author>busekaya9206</author>
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         <description><![CDATA[<div> kan (hematopoetik olarak da bilinen) kök hücrelerinden oluşur. Ancak kök hücreler insan gelişiminin en erken evrelerinde de mevcuttur ve bilim adamları bu hücreleri büyüttüklerinde<strong><em> ‘embriyonik kök hücre’ </em></strong>adını alırlar. Embriyonik kök hücreler, erişkin tip kök hücrelerin aksine yüzlerce değişik tipte hücreye dönüşme potansiyeline sahiptirler. Mesela, bir kan kök hücresi yalnızca kan yapabilirken, bir embriyonik kök hücre kan, kemik, deri, beyin vb. yapabilir. Ek olarak, embriyonik kök hücreler doğa tarafından, dokuları ve hatta organları oluşturmak için programlandırılmışlardır ancak erişkin tip kök hücreler bunu yapamazlar. Bu da embriyonik kök hücrelerin hasta organları düzeltmek için daha fazla doğal kapasitesi olduğu anlamına gelir. Embriyonik kök hücreler, tüp bebek  tedavisinden arta kalan ve kullanılmadığı taktirde atılacak olan, bir kaç günlük embriyolardan elde edilir ve laboratuvarda, hücre kültür tabağında oluşturulurlar.</div>]]></description>
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         <pubDate>2017-04-23 06:59:14 UTC</pubDate>
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         <title>Memelilerde kök hücrelerin iki yaygın tipi bulunur; blastokist evresinin iç tabakasından elde edilebilen embriyonik kök hücreler ve çeşitli dokularda bulunan yetişkin kök hücreleri.</title>
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         <pubDate>2017-04-23 07:07:58 UTC</pubDate>
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         <pubDate>2017-04-23 07:15:42 UTC</pubDate>
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         <title> karekodları okutmayı unutmayın</title>
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