(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 4. Arginine kinase activity in primmorphs from S. domuncula in
response to silicic acid. The primmorphs were incubated for 0-5 days in the
absence (white bars) of presence of 60 µmol l-1 silicic acid
(SA; black bars). In a parallel series of experiments the primmorphs were
coincubated with 100 µmol l-1 of DIDS in assays without
(hatched) and with SA (cross-hatched). The enzyme activity is given in nmoles
ATP generated min-1 10 µg-1 protein. Values are means
± S.E.M., N=5.