The clone anergy and clone deletion are considered as the major theories of the immunotolerance mechanism.以往观点认为,T细胞 免疫耐受机制主要有克隆无能和克隆删除两种学说.Introduces the concepts of available anergy and reduced exergy by analysing the ...
The parasympathetic innervation of the heart originates in the medulla oblongata.支配心脏的副交感神经发源于延髓的迷走神经核.While this is commonly agreed upon, the vagal innervation of idioventricular pacemakers is not.这点是人所公认的, 而心室自身起撑点的迷走神...
Here the Nile broadens out between the huge granite boulders.尼罗河在此处变宽，从两块花岗岩巨石间穿过。A whole valley of boulders tossed higgledy-piggledy as though by some giant.整个山谷里巨石翻滚，就像有巨人在狂扔乱掷。The shoreline was made up of a jumble of ...
Augustus instituted boards of curators to take charge of administrative tasks.奥古斯都曾设立保佐人委员会负责行政事务.This exhibition has invited Ji Qixin , Liu Jiakun, Li Xiaoshan as curators.展览邀请矶崎新、刘家琨、许江 、 李小山担任策展人.There were several co...