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....
Still Rhett did not look at her. His eyes were bent insistently on Melanie's white face.瑞德还是看也不看她, 他的眼睛死死地盯着媚兰苍白的脸.These are the questions which we should think and explore insistently.怎样实现这一主体性等问题仍要求我们不断思考、探索.I loo...