TABLE 2.

Mannitol fluxes after addition of Aeromonas supernatant in HI-29/B6 monolayers^a

Sample	Mean value ± SEM
	Jmannitolms (nmol h−1 cm−2)	Rt (Ω cm2)
Control	51 ± 0.64	551 ± 23
Supernatant	235 ± 8.4*	49 ± 1.9*

^aStrain Sb supernatant (1:10) was added to the mucosal compartment of monolayers mounted in Ussing chambers. After the transepithelial resistance (R^t) had dropped to <10% of its initial value, [³H]mannitol was added to the mucosal compartment, and the transepithelial permeation of the label was quantified by beta counting. Monolayers treated with carrier only served as controls. Values are means ± the SEM (n = 6 monolayers for each group). *, P < 0.001 versus controls treated with carrier only.