The distribution of epicatechins (ECs) ( m / z 291.1304, [M + H] + ) in tea seeds during the S1–S4 periods showed a trend of first increasing and then decreasing ( Fig. 5 ).
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Visualization of metabolite distribution based on matrix-assisted laser desorption/ionization-mass spectrometry imaging of tea seedlings (<i>Camellia sinensis</i>).
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