单项选择题配体(ligand)是( )。
单项选择题肌动蛋白纤维对于黏着斑就像( )对于半桥粒。
单项选择题Developing frog embryos treated with anti-fibronectin antibodies
单项选择题All of the following are true about antisense RNA except ( )
单项选择题The 5S rRNA differs from the other cellular rRNAs in which of the following ways ( )