Table 1.

Gastrointestinal lengths of NF48 tadpoles after 7 days of 10 nMT3. Wild type (WT) are compared with transgenic animals having 4 different promoters driving TRDN-GFP.

Experiment	Wild-type, or Promoter driving TRDN-GFP	Treatment Duration (days)	T3	Gut length, mm, (±standard deviation)	n
I.	WT	0	−	8.4 (0.5) ^a	9
	WT	2	+	5.4 (0.6) ^b	9
	WT	3	+	4.8 (0.4) ^b	9
	WT	4	+	4.3 (0.3) ^bc	10
	WT	5	+	4.1 (0.5) ^c	9
	WT	7	+	3.0 (0.4) ^d	8
	WT	7	−	8.6 (0.7) ^a	9
II.	CMV	0	−	8.2 (1.0) ^a	3
	CMV	6	+	6.2 (0.6) ^b	10
	WT	6	+	3.8 (0.5) ^c	10
	WT	6	−	7.8 (1.0) ^a	10
III.	Collagen	0	−	8.0 (1.1) ^a	3
	Collagen	4	+	5.8 (0.9) ^b	7
	Collagen	7	+	5.0 (0) ^bc	2
	WT	4	+	4.6 (0.4) ^c	6
	WT	7	+	3.3 (0.4) ^d	6
	WT	7	−	8.3 (1.3) ^a	7
IV.	pCar	0	−	8.5 (1.3) ^a	4
	pCar	6	+	4.4 (0.7) ^b	6
	WT	6	+	4.8 (0.6) ^b	10
	WT	6	−	9.2 (0.6) ^a	10
V.	IFABP	0	−	7.9 (0.8) ^a	5
	IFABP	6	+	4.4 (0.03) ^b	6
	WT	6	+	4.3 (0.3) ^b	10
	WT	6	−	8.1 (0.9) ^a	10

Mean gut lengths with different superscripted letters are significantly different from each other (p < 0.05) within the same experiment. WT denotes non-transgenic tadpoles.