Sodium nitroprusside has been used as a stabilizing agent for HRP histochemistry since 1919. However, it is known to have toxic effects orally, intravenously, and subcutaneously. In order to avoid the use of sodium nitroprusside as a stabilizer in HRP histochemistry, we have tested other chemically
The reduction potentials of the compound II/ferric and compound I/compound II couples have been studied, using potassium hexachloroiridate as a mediator titrant, by thin-layer spectroelectrochemistry. Compound I, which is 2 equiv more oxidized than the ferric (i.e., resting) form of the enzyme, was
1. The reversible proton dissociation equilibria of peroxidase, apoperoxidase and haem-recombined apoperoxidase have been explored in 150mm-potassium chloride at 20 degrees C at pH3-11.5. 2. Complementary heat measurements have been made of the classes of titratable groups to determine their
The role of seabirds as sea-land biovectors of nutrients is well documented. However, no studies have examined whether and how colonial seabirds that differ in diet may influence terrestrial vegetation. Therefore, the purpose of the study was to describe and compare plant communities located in the
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