Stem bulging at nodes is this normal? not on my other plant

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Hello, guys I have been vegging this plant for about a month and a half and the stem on is thick as hell, i was looking closer yesterday and it looks like the stem is reinforcing itself with these bulges on it. Is this normal?

IMG01690-20120802-2152.jpgIMG01691-20120802-2152.jpgIMG01692-20120802-2152.jpg
 

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Member
I will be taking more clones off the bottom branches, should i trim the rest off? Here she is from top view. She is short but bushy.

IMG01669-20120729-2129.jpg
 
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