Table 2.
Nieuwkoop and Faber stage 51–55 Xenopus tropicalis tadpoles have more labeled T3 tissue content than do TS stage 9 E. coqui embryos after immersion in labeled T3 for 8, 24, or 46 h.
| Labeled T3 | T3 | |||
|---|---|---|---|---|
| Species | Labeled T3 concentration (nM) | Timepoint (h) | pg/mg | pg/mg |
| X. tropicalis | 1 | 8 | 1.079 ± 0.19 | 0.095 ± 0.02 |
| E. coqui | 1 | 8 | 0.000 ± 0.00 | 0.236 ± 0.01 |
| X. tropicalis | 1 | 24 | 1.371 ± 0.08 | 0.018 ± 0.01 |
| E. coqui | 1 | 24 | 0.000 ± 0.00 | 0.245 ± 0.04 |
| X. tropicalis | 50 | 46 | 30.436 ± 9.37 | 0.035 ± 0.01 |
| E. coqui | 50 | 46 | 0.483 ± 0.27 | 0.447 ± 0.20 |
Each value represents the mean of 3–6 individuals ± standard error.