多甲藻对不同光照强度的反应:色素沉着及暗光适应的可能性

在ＨＰＬＣ色素分析的基础上，研究了多甲藻对不同光照强度（１６．６～２５０μ．Ｅｍ＾０２ｓ＾－１）的反应。类胡萝卡素中最重要的多甲藻素和硅甲藻黄素占叶黄素总量的９０％，随着光照强度的逐步增加，多甲藻细胞中叶绿素ａ含量呈现明显的下降趋势。结果表明硅甲藻黄素和β胡萝卜素具有光作用：１）当多甲藻暴露于较强光下时，硅甲藻黄素／叶绿素ａ之比呈现出明显增加的趋势，β胡萝卜素／叶绿素ａ之比也显现出明显的增加趋势；     

Measuring the lung function in the mouse: the challenge of size

Measurement of the effects of drugs, mediators and infectious agents on various models of lung disease, as well as assessment of lung function in the intact mouse has the potential for significantly advancing our knowledge of lung disease. However, the small size of the mouse presents significant challenges for the assessment of lung function. Because of compromises made between precision and noninvasiveness, data obtained may have an uncertain bearing on the mechanical response of the lung. Nevertheless, considerable recent progress has been made in developing valid and useful measures of mouse lung function. These advances, resulting in our current ability to measure sophisticated indices of lung function in laboratory animals, are likely to lead to important insights into the mechanisms of lung disease.