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An analytical method using liquid chromatography-tandem mass spectrometry has been developed for the determination of 5 paralytic shellfish poisoning (PSP) toxins (saxitoxin, gonyautoxin1-4) in shellfish and tunicate. The tested parameters included extraction solvent, clean-up method, mobile phase and mass spectrometric detection parameters including multiple reaction monitoring (MRM) conditions....
A previous study revealed that IbEF1 from sweet potato promoted early flowering in transgenic tobacco and acted as a novel regulator involved in flowering time control. Two putative ortholog genes were found in N. tabacum:NtEF1 and NtEF2. Subcellular localization of NtEF1 and NtEF2 with an in vivo targeting approach revealed that NtEF1 and NtEF2 were correctly targeted to the cytosol in protoplasts...
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