Fig. 2.

Time courses of cellulase activity (a), dry cell weight (b), and protein concentration (c) in cultures with pH-controlled at 3.5 (open circles), 4.0 (closed circles), 4.5 (open rhombuses), 5.0 (closed triangles), 5.5 (open triangles), 6.0 (closed squares), and 6.5 (open squares). d pH response of the cellulase production rate (closed circles) and the specific cellulase activity (open circles). The cellulase production rate and the specific cellulase activity were calculated from the data shown in a and c