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NMR Magnetic Relaxation Study on Toad Embryo of Various Developmental Stages

CHEN JIASEN; WANG DONGSHENG; CHEN YUEMTN; WANG LIUEI; LIU RUI(Department of Physics)  
Here, dealing with two subjects: 1, to find out the relation between toad embryo of various developmental stages and their longitudinal relaxation time under NMR spin echo spectrometer examination.A maximum value exists for the relaxation time,which is capable of giving us very useful information.2, the effect of various physical stimulations on toad embryo of different developmental stages.It is discovered that stimulations during small relaxation time stages might reduce the time need for development and growth.
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