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. 2016 Feb 25;5:171. doi: 10.1186/s40064-016-1878-1

Table 2.

Cumulative survival (% mean ± SD) of eight selected families at different exposure time during the ammonia nitrogen stress

Family	Time (h)
Family	24	48	72	96
A	100.00 ± 0.00^c	91.33 ± 7.51^d	91.33 ± 7.51^d	88.67 ± 9.81^d
B	91.00 ± 1.73^c	64.33 ± 10.26^abc	42.33 ± 21.36^ab	24.33 ± 14.01^ab
C	97.00 ± 0.00^c	74.33 ± 19.63^bcd	66.67 ± 20.31^bcd	55.33 ± 21.36^c
D	87.67 ± 5.03^bc	68.67 ± 5.13^abc	51.00 ± 8.54^abc	32.33 ± 9.24^abc
E	86.67 ± 12.34^bc	62.33 ± 12.86^ab	52.33 ± 15.28^abc	32.33 ± 12.86^abc
F	71.33 ± 12.50^a	53.33 ± 15.28^bc	44.33 ± 20.13^ab	33.33 ± 20.31^abc
G	100.00 ± 0.00^c	85.67 ± 9.81^cd	72.33 ± 5.03^cd	51.33 ± 12.50^bc
H	74.33 ± 10.26^bc	50.33 ± 5.77^a	37.67 ± 5.03^a	23.00 ± 10.00^a

Values (expressed as mean ± SD, n = 3) with different letters in the same column are significantly different from each other (P < 0.05)