Stem cells a lesson from dedifferentiation.干细胞:从脱教训.The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.残存的韧皮部也可以脱分化形成愈伤组织, 此外, 还存在愈伤组织源于木质部的情况....
1.5 million cubic metres of earth were moved.共搬运土方150万立方米。He was stripped of his Olympic Hundred Metres gold medal after testing positive for steroids.类固醇检测呈阳性后，他的奥运百米金牌被收回。1.5 billion cubic metres of earth were/was move...