mastarula
Anmeldungsdatum: 11.11.2006 Beiträge: 4
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Verfasst am: 11. Nov 2006 18:37 Titel: Northernblot frage^^ |
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Also wie Northernplot im groben funkt ist mir schon klar, --> man trennt die Rna auf, macht nen blot und hybridisiet ( labeln), aber wozu braucht man ne "normalisierung" (Siehe letzten Satz im Orginaltext bzw. auf dem pic die letzte Zeile)
http://i15.tinypic.com/2qak74n.jpg
"Original Text"
RNA gel blot analysis was carried out as described previously
by loading 3 mg total cellular RNA per lane (18). The
templates for probing the tetC genes were NdeI±XbaI coding
region fragments. The template for probing the tobacco
cytoplasmic 25S rRNA was a PCR fragment ampliÆed from
total tobacco cellular DNA with primers 5¢-TCACCTGCCGAATCAACTAGC-
3¢ and 5¢-GACTTCCCTTGCCTACATTG-
3¢. Probes were prepared by random-primed
32P-labeling (see above). [COLOR="Red"]RNA hybridization signals were
quantiÆed using a Molecular Dynamics PhosphorImager and
normalized to the 25S rRNA signal.[/COLOR]
THx MAstar |
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