Trichomes of cpr5 plants have an altered cell wall composition. (A) Paracrystaline cellulose composition of ethanol-insoluble cell walls of rosette leaves, as determined by the Updegraff method , N = 3; error bars show standard deviation. * indicates a significant difference from wild-type in a paired t-test (cpr5-1 vs. Col-0, p < 0.002). (B) Non-cellulosic monosaccharide composition of rosette leaf cell walls. Data are the mean of three determinations; error bars show standard deviation; * indicates a significant difference in a paired t-test, p < 0.05. Glu = glucose, Gal = galactose, Man = mannose, GalA = galacturonic acid, Xyl = xylose, Rha = rhamnose, Ara = arabionose, Fuc = fucose.