Methods: CATTCCT and CATTGCT motif-containing oligonucleotides were used in binding and competition reactions, and binding activities were analyzed with gel retardation assays.

• 方法：采用含CATTCCT或CATTGCT核心序列的不同寡核苷酸与发育阶段骨骼肌核抽提物进行胶阻滞实验及竞争反应。