Lactose and Maltose Uptake by Streptococcus lactis

Resting ceils of Streptococcus la.ctis 7962 were examined for rate of uptake of radioactive lactose following growth of the cells in broth media containing lactose, maltose, glucose, or glucose plus lactose as carbon sources.Lactose-grown cells accumulated label at the fastest rate, followed in order by cells grown on maltose, lactose plus glu-