While general natterin was highest expressed in SB at the early timepoints, the expression of paralogues 1 and 3 was constitutive and the expression of paralogue 2 increased in the later stages in SB. In adult fish tissues the expression of general natterin was highest in the gills whereas natterin paralogue 1 was highest expressed in the kidney and paralogues 2 & 3 in the skin.
Mikill munur var á tjáningu mismunandi natterin gena milli tímapunkta. Natterin 1 og 3 voru jafntjáð í gegnum þroskunina, en tjáningin á natterin 2 jókst, sérstaklega í dvergbleikjunni, þegar á leið.