%0 Journal Article
%T Configuration of nucleolar DNA in situ in nucleolus of Allium cepa cells<br>
%A TAO Wei
%A HE Jie
%A JIAO Mingda
%A HE Mengyuan
%A HAO Shui
%A <br>
%J 科学通报(英文版)
%D 2001
%I 
%X The location and configuration of nucleolar DNA have not been determined for a long time. In this paper, we have observed the nucleolar ultrastructure and the character of nucleolar DNA in Allium cepa cells by conventional electron microscopy and the cytochemical NAMA-Ur DNA specific staining method. Furthermore, we have properly improved the NAMA-Ur method so as to analyze the location and configuration of nucleolar DNA in situ. Our results indicated that the nucleolar DNA in Allium cepa cells is mainly located at the border between fibrillar centers and dense fibrillar component, especially distributed in the configuration of encircling the fibrillar centers.
%K nucleolus
%K NAMA-Ur method
%K configuration of nucleolar DNA
%K Allium cepa<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=918C0EC445060A09931070648EB42346&yid=14E7EF987E4155E6&vid=D997634CFE9B6321&iid=CA4FD0336C81A37A&sid=95D537AC89B28832&eid=5C3443B19473A746&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=0