Fig. 5. Analysis of monosaccharides in wild type, rsw4, and rsw7 cell walls. The levels are expressed per mg of cell wall dry weight. Cellulosic glucose is the material that is insoluble in boiling trifluoroacetic acid. Data are mean of 4 replicate determinations±s.d. Significance was tested with two-tailed, paired t-tests, mutant versus wild type, and indicated when equivalence of means was rejected by *P<0.05, **P<0.01 or ***P<0.001.