新课改模式下,要求体育在强健学生身体素质的基础上,引导学生积极参与体育活动,培育体育精神和素养等.这就需要初中体育教师在开展体育教学过程中,积极创新教学方式,转变体育
Cell adhesion and migration are key cell behaviors during gastrulation,and plays a crucial role in shaping the body plan in vertebrates.Collagen triple heli
Demyelinating diseases include multiple sclerosis,which is a neurodegenerative disease characterized by oligodendrocyte immune attacks,resulting in myelin s
Microglia are resident macrophages in the brain.Recent studies have suggested that in addition to their actions as scavengers to remove infectious agents,da
Retinoic acid(RA)signaling plays crucial roles in early embryonic development of vertebrates through the ligand,RA,binding to the heterodimers of RA recepto
长城牌20英寸彩色电视机在使用一段时间后,屏幕局部出现彩色偏色,变成紫色。仔细地检查电视机的解码、视放、显象管及其附属电路,都未发现有异常现象。可以断定电视机偏色不
李琳说,我这两年实在太忙了,一部戏还没拍完,下一部戏又接上了。我愿意,其实这是自找的。我戏瘾太大,一不拍戏就觉得不舒服,不踏实。近两年人气正旺的李琳确实太忙了,据说连
Reprogramming of somatic cells to desired cell-types holds great promise in regenerative medicine.However,production of transplantable hematopoietic stem ce
本文研究了NO_2急性暴露对由绵羊红血球引起的小鼠初次体液抗体应答的影响。作者用BALB/C小鼠,6—9周龄,急性暴露5ppm、20ppm和40ppm的NO_2各12小时后,只有40ppm组动物有死