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Fig. 6. Effects of cadmium (Cd) exposure on expression of cytoplasmic (HSP70,
HSP90) and mitochondrial (HSP60) heat shock proteins in gill and
hepatopancreas (HP) cells of oysters. HSP levels were measured using
immunoblotting and expressed as % of the respective controls. Cells were
exposed to varying Cd levels (x-axis) for 4 h at 20°C. Vertical
bars represent s.e.m. Asterisks denote values significantly different from the
respective controls (P<0.05). N=5.