Table 2.

Reporter gene expression in fish injected with a plasmid containing Ldh-B regulatory sequence, at rest, exposed to handling stress, or injected with exogenous cortisol

Genotype of injected regulatory sequence	Luciferase activity, RLU
	Unstressed	Stressed	Sham injected	Cortisol injected
Northern	0.047  ± 0.007	0.048  ± 0.009	0.043  ± 0.007	0.039  ± 0.005
Southern	0.017  ± 0.002	0.032  ± 0.004*	0.023  ± 0.004	0.042  ± 0.008*

RLU = relative light units (mean ± SE, n = 10/group); *, significantly different from unstressed group (P < 0.05). Injections were performed in fish from Florida.