教师在面对小学阶段的学生进行数学教学时,需要充分考虑到学生现阶段基本的学习状况,采取更适宜孩子学习的课堂教学方式.小学生本来就还是一个思维发展、智力发育初期的孩子,
Gene transfer vector is one of the key technologies of gene therapy technique.Gene carriers generally can be divided into two major categories of virus and
One of the major obstacle in achieving effective tumor drug therapy is the membrane barrier of tumor cells that is permeable to only small (
Recently,we applied a simple,fast and reproducible cell-based aptamer selection strategy called Cell-SELEX which uses whole,intact cells as the target for a