Vesicles of brush-border and basolateral plasma membrane were prepared from enterocytes of the rat small intestine. The separateness of these two varieties of plasma membrane was confirmed by appropriate enzyme assays. The uptake of Fe2+ by these membrane vesicles was studied, and the results suggest differences between the two types of membrane in both the amount of Fe2+ taken up and in the ra...

under the contemporary scenario of global climate change and increasing coastal eutrophication, baseline studies of phytoplankton diversity and distribution in relation to habitat conditions constitute the first approach to evaluate potential shifts at the base of the food webs. here we present data of phytoplankton species composition and environmental variables in winter 2006 in a temperate e...

Uniformly labelled radioactive glucose was fed to Chlorella cells in the presence of non-radio­ active carbon dioxide. The concentration of carbon dioxide was varied and the distribution of radio­ activity determined in the light. At low concentrations of carbon dioxide much of the radioactivity appeared in glycollate or derivatives thereform. By contrast, at higher concentrations of carbon dio...