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"&lt;strong&gt;&lt;img alt=\"1121_justin_bieber_EX_01\" src=\"http://ll-media.tmz.com/2011/11/21/1121-justin-bieber-ex-01.jpg\" /&gt;&lt;br /&gt;Justin Bieber&lt;/strong&gt; took a DNA test on Friday night in New Jersey, and now it's baby mama's move ... TMZ has learned.&lt;br /&gt;&lt;br /&gt;We've learned ... Justin took the test at a lab under \"very controlled circumstances.\"&amp;#160; We're told there is a solid chain of custody, so it's going to be hard for&lt;strong&gt; Mariah Yeater&lt;/strong&gt; or her lawyer to challenge it.&lt;br /&gt;&lt;br /&gt;As we first reported, &lt;strong&gt;&lt;a href=\"http://www.tmz.com/2011/11/06/justin-bieber-mariah-yeater-dna-test/\"&gt;Justin's team will NOT settle or even discuss settlement &lt;/a&gt;&lt;/strong&gt;with Yeater or her lawyer.&amp;#160; It's now up to her to provide DNA results from Mariah's baby.&lt;br /&gt;&lt;br /&gt;Justin &lt;a href=\"http://www.tmz.com/2011/11/16/justin-bieber-mariah-yeater-sue/\"&gt;&lt;strong&gt;has vowed to sue&lt;/strong&gt;&lt;/a&gt; Mariah and her lawyers once he establishes he's not the daddy.&lt;br /&gt;&lt;br /&gt;Mariah's lawyer was unavailable for comment.&lt;br /&gt;&lt;!-- relatedlinks --&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.tmz.com/2011/11/21/justin-bieber-dna-test/5/>