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Rice seedlings (A) and Arabidopsis seedlings; (B) grown under microgravity conditions in space during the Space Shuttle STS-95 flight for 3 days. (A) short thick organs denote the shoots, and long thin ones denote the roots. All rice shoots bent toward the seed (to the right), and some roots emerged into the air; (B) the roots grew along the surface of the medium, and only the shoots are visible. Some shoots grew into the medium.
