E gel 1 kb plus dna ladder consists of 18 individual chromatography purified dna fragments and has a reference band at 1 500 bp for easy orientation. The ladder is composed of fourteen chromatography purified individual dna fragments in base pairs. 1 kb plus dna ladder consists of 18 individual chromatography purified dna fragments and has a reference band at 1 500 bp for easy orientation.
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