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Published online 18 February 2009 | Nature | doi:10.1038/457947a
MRI modified for better images
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Metabolism and especially photosynthesis involve triplet species whose unpaired spins align in a strong magnetic field, altering chemistry. The Bohr magneton is 1836 times larger than the nuclear magneton. Seven tesla need not be biologically inert - especially on instrument entry and exit with violent edge and inductive effects. Nobody has grown Arabidopsis thaliana from seed in a 7 tesla, high gradient, high divergence magnetic field (hydroponics). Somebody should look. If not rockcress, then Matthew 6:28.