Cortisol directly impacts Flavobacterium columnare in vitro growth characteristics

Table 3 Bacterial colony spreading (BCSp)

	Added cortisol concentration (µg/L)
	0 (control)	500	1000	5000
BCSp HV (µm/mL)	1211 ± 58^a	1164 ± 58^a	932 ± 58^b	876 ± 60^b
BCSp LV (µm/mL)	593 ± 60^a	452 ± 61^a	496 ± 65^a	479 ± 73^a
p-value within [cortisol]	<0.001	<0.001	<0.001	<0.001

Least Squares Means and standard errors (LSM ± SE) of the bacterial colony spreading (BCSp) (µm) measured from the colonies of the highly (HV) and low virulent (LV) isolates inoculated modified Shieh broths 24 h after addition of the appropriate cortisol concentrations [cortisol] (µg/L).
^a,bRefer to significant differences within one virulence group (HV or LV).

ISSN: 1297-9716