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Northern hybridization showing NtCP56 expression in the tissue of Nicotiana tabacum L. NtCP56 mRNA abundance was analysed by using the 5’ end of NtCP56 cDNA as a probe. Each lane was loaded with 20 μg total RNA. R, root; S, stem; SE, sepal; P, petal; AN, anther; PI, pistil; L, leaf. To ensure equal sample abundance on gels 18S rRNA was used to monitor loading equivalence.
