Formation of GSB, used to monitor glutathione levels before
and after addition of challenge agents, indicated a general
decrease in cell fluorescence (Fig. 5iv); AA gave the most
significant decrease in GSB fluorescence (21±0?7 a.u.,
n=10), to below the levels of the NAD(P)H autofluorescence
control (55±0?9 a.u., n=14). The effect of GPE was
less significant (Fig. 6).