American intellectuals of different generations and in various eras,with a strong sense of social responsibility and a critical mind,have dedicated themselves in revealing some major problems existing in American educ...American intellectuals of different generations and in various eras,with a strong sense of social responsibility and a critical mind,have dedicated themselves in revealing some major problems existing in American education,namely educational inequality,declining academic performance,inadequate funding,and school violence.By describing and probing into these problems from a socio-cultural perspective,they offer a solution of eliminating the socio-economic inequality in America,which is fundamental and essential.展开更多
Exosomes：Exosomes are a sub-population of micro-vesicles ranging from 40–100 nm that were earlier thought as artefacts under electron microscope.They recently came into attention for their storage of biological info...Exosomes：Exosomes are a sub-population of micro-vesicles ranging from 40–100 nm that were earlier thought as artefacts under electron microscope.They recently came into attention for their storage of biological information,cell-to-cell communication,serving as biomarkers and potential use in neural protection and regeneration （Kalani et al., 2013, 2014a）.展开更多
文摘American intellectuals of different generations and in various eras,with a strong sense of social responsibility and a critical mind,have dedicated themselves in revealing some major problems existing in American education,namely educational inequality,declining academic performance,inadequate funding,and school violence.By describing and probing into these problems from a socio-cultural perspective,they offer a solution of eliminating the socio-economic inequality in America,which is fundamental and essential.
文摘Exosomes：Exosomes are a sub-population of micro-vesicles ranging from 40–100 nm that were earlier thought as artefacts under electron microscope.They recently came into attention for their storage of biological information,cell-to-cell communication,serving as biomarkers and potential use in neural protection and regeneration （Kalani et al., 2013, 2014a）.
