Genotype and doxycycline chow, without (-) or with (+)	sex	wet/dry weight ratio of duodenum	wet weight of duodenum half (g; in 85 μL formamide)	calculated dry weight of duodenum half (g)	OD 620 nm - blank	OD620 nm/g dry weight (duodenum)
WT -	M	4.927	0.0307	0.0062	0.0640	10.272
WT -	F	4.912	0.0172	0.0035	0.0460	13.138
WT -	M	5.333	0.0281	0.0053	0.0960	18.221
WT -	F	5.433	0.0375	0.0069	0.1010	14.634
WT -	M	5.179	0.0287	0.0055	0.0430	7.759
Mean +/- SEM (of entries in column above)		5.157 +/- 0.105	0.0284 +/- 0.0033	0.0055 +/-  0.0006	0.0700 +/-  0.0122	12.805 +/-  1.798
WT +	M	5.342	0.0542	0.0101	0.1520	14.981
WT +	M	5.653	0.0477	0.0084	0.1120	13.272
WT +	M	5.700	0.0564	0.0099	0.1110	11.218
WT +	F	5.542	0.0498	0.0090	0.1430	15.914
WT +	F	5.723	0.0266	0.0046	0.0470	10.112
WT +	F	5.186	0.0262	0.0051	0.0470	9.304
WT +	M	5.543	0.0342	0.0062	0.0480	7.779
Mean +/- SEM (of entries in column above)		5.527 +/- 0.075	0.0422 +/- 0.0049	0.0076 +/-  0.0009	0.0943 +/-  0.0175	11.797+/-  1.142
KO -	F	5.763	0.0209	0.0036	0.0690	19.025
KO -	M	4.232	0.0164	0.0039	0.1010	26.061
KO -	M	4.810	0.0227	0.0047	0.0880	18.647
KO -	F	5.650	0.0363	0.0064	0.0600	9.339
KO -	M	5.212	0.0178	0.0034	0.0640	18.739
Mean +/- SEM (of entries in column above)		5.133 +/- 0.282	0.0228 +/- 0.0035	0.0044 +/-  0.0005	0.0764 +/-  0.0078	18.362 +/-  2.659
KO +	M	5.128	0.0193	0.0038	0.0600	15.941
KO +	M	5.030	0.0459	0.0091	0.1980	21.697
Mean +/- range (of entries in column above)		5.079 +/- 0.049	0.0326 +/- 0.0133	0.0065 +/-  0.0027	0.1290 +/-  0.0690	18.819 +/-  2.878
DT -	M	5.426	0.0322	0.0059	0.0775	13.058
DT -	M	4.255	0.0360	0.0085	0.0895	10.579
DT -	M	4.818	0.0306	0.0064	0.1460	22.989
DT -	M	5.189	0.0197	0.0038	0.0380	10.010
DT -	F	5.500	0.0256	0.0047	0.0390	8.379
Mean +/- SEM (of entries in column above)		5.038 +/- 0.229	0.0288 +/- 0.0028	0.0059 +/-  0.0008	0.0780 +/-  0.0198	13.003 +/-  2.3607
DT +	M	5.008	0.0694	0.0139	0.0270	1.948
DT +	M	4.750	0.0660	0.0139	0.0070	0.504
DT +	M	5.495	0.0587	0.0107	0.0692	6.478
DT +	M	5.233	0.0542	0.0104	0.0620	5.986
Mean +/- SEM (of entries in column above)		5.121 +/- 0.159	0.0621+/- 0.0034	0.0122+/-  0.0010	0.0413 +/-  0.0147	3.729 +/-  1.478