Another pretreatment method using cation-ion exchange solid-phase extraction (MCX-SPE) was employed for determining most of the PAs that are not contained in the herbal medicines. That is, the proposed LC–MS/MS method coupled with MCX-SPE extraction and 50% MeOH extraction method was ...
Live sea cucumbers (150 ± 10 g, 3 years old) were obtained from local aquaculture and raised for 7 days to ensure they were MEQ free. Sea cucumbers were divided into the experimental group and the control group with six replicates each. Sea cucumbers in the experimental group were raised ...
in China___school at the age of 6 or 7 and must study there for at least nine years.10.the earth is ___ by air ,which makes up its atmosphere11.if you can't ___the job,i'll get someone else to do it.12.john was so ___and warm in bed that ...
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