Table 2. Morphological measurements of maxillary barbel regeneration.

After 14 days at the indicated treatments, barbel regeneration past the amputation plane was measured in millimeters (see Methods & Figure 1B). Boxplots of these data are graphed in Figures 5, 6 and 8, respectively.

A. fgf20a regeneration experiments at restrictive (33°C) and ‘permissive’ (28°C) temperatures
treatment	genotype	N	mean regenerated barbel length (mm)	range (mm)	95% CI of mean
33°C	wild type	18	1.1	0.43 – 2.00	0.91 – 1.40
33°C	fgf20azp3/zp3	13	1.2	0.46 – 1.70	0.95 – 1.40
28°C	wild type	20	1.2	0.62 – 1.90	1.10 – 1.40
28°C	fgf20azp3/zp3	14	1.1	0.52 – 1.70	0.94 – 1.40

B. dn-fgfr1 barbel regeneration experiments (HS = heat shock; NHS = no heat shock)
treatment	genotype	N	mean regenerated barbel length (mm)	range (mm)	95% CI of mean
HS	wild type	14	1.50	0.83 – 2.00	1.30 – 1.70
HS	dn-fgfr1	14	0.70	0.08 – 1.40	0.46 – 0.95
NHS	dn-fgfr1 + wild type	30	1.70	0.92 – 2.10	1.60 – 1.80

C. dn-fgfr1 barbel and taste bud regeneration experiments (HS = heat shock)
treatment	genotype	N	mean regenerated barbel length (mm)	range (mm)	95% CI of mean
HS	wild type	24	1.10	0.52 – 1.60	1.30 – 1.70
HS	dn-fgfr1	26	0.57	0.10 – 1.10	0.47 – 0.67