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a–f. Concentrations of hormones extracted from skin of the three bottlenose dolphins whose samples represented the finest temporal resolution following sample combination (COL: n = 10 aggregate samples, mean number of days combined for each sample = 2.4; BLU: n = 6 aggregate samples, mean number of days combined for each sample = 4.8 days; NEH: n = 6 aggregate samples, mean number of days combined for each sample = 6.67)
