Table 1 Corrected and calibrated values of reference materials analyzed as unknowns for samples containing 2 to 40 μg C
From: Natural abundance isotope ratios to differentiate sources of carbon used during tumor growth in vivo
Material | δ13C calibrateda | δ13C measured (all reps) | δ13C measured (2–3 μg C reps only)b |
|---|---|---|---|
JALA | − 20.62 ± 0.03 (25) | − 20.59 ± 0.06 (91) | N/A |
GLUC1 | − 12.45 ± 0.04 (10) | − 12.44 ± 0.13 (84) | − 12.50 ± 0.17 (16) |
GLUC2 | − 19.93 ± 0.03 (10) | − 19.91 ± 0.07 (84) | − 19.91 ± 0.10 (16) |
GLUC3 | − 26.38 ± 0.04 (10) | − 26.37 ± 0.06 (35) | − 26.33 ± 0.07 (12) |