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(a),(c) En face tomographic images of onion with the interval time of 1ms; (b),(d) Temporal contrast of corresponding FF-OCT images; (e) Colour bar of mean frequency for temporal contrast; (f),(h) En face tomographic images of the semi-dehydrated and the utterly dehydrated onion sample; (g),(i) Temporal contrast from the same ROI in the semi-dehydrated and utterly dehydrated onion sample.
