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. 2017 Feb 16;8:71. doi: 10.3389/fphys.2017.00071

Figure 4.

Figure 4

Absolute quantification of mRNA (×102 copies of transcripts per ng total RNA) of urea transporter a2a (ut-a2a) in the gills of Protopterus annectens kept in fresh water on day 0 (FW; control), after 6 days (d; induction phase), or 6 months (mon; maintenance phase) of aestivation, or after 1 or 3 d of arousal (Ar) from 6 mon of aestivation. Results represent means ± S.E.M (N = 4). Means not sharing the same letter are significantly different (P < 0.05).