Table 1.
Lipid detection and distribution along the crypt-villus axis. All ions listed are the [M-H]−.
| Measured m/z | Theoretical m/z | Error ppm | Tentative Identification | Normal Tissue Distribution |
|---|---|---|---|---|
| 714.5069 | 714.5079 | −1.43 | PE(16:0/18:2) | Crypt-villi axis, gradient increasing |
| 740.5223 | 740.5236 | −1.81 | PE(18:1/18:2) | Crypt-villi axis, gradient decreasing |
| 742.5383 | 742.5392 | −1.20 | PE(18:0/18:2) | crypt-villi axis |
| 744.5537 | 744.5549 | 0.0022 | PE(18:0/18:1) | Crypt-villi axis gradient, Muscularis externa |
| 796.5840 | 796.5862 | −2.74 | PE(40:3) | Crypt-villi axis, gradient decreasing |
| 809.5176 | 809.5186 | −1.28 | PI(32:0) | Villi epithleium, low abundance crypts |
| 833.5172 | 833.5186 | −1.70 | PI(34:2) | crypt-villi epithelium |
| 835.5330 | 835.5342 | −1.39 | PI(34:1) | Crypt-villi axis, gradient decreasing |
| 857.5170 | 857.5186 | −1.84 | PI(36:4) | Crypt-villi axis, gradient increasing |
| 859.5345 | 859.5342 | 0.36 | PI(36:3) | Crypt-villi axis, gradient decreasing |
| 861.5489 | 861.5499 | −1.13 | PI(36:2) | Crypt-villi axis, gradient decreasing |
| 863.5653 | 863.5655 | −0.28 | PI(36:1) | Crypt-villi axis, gradient decreasing |
| 881.5180 | 881.5186 | −0.69 | PI(38:6) | Crypt-villi axis, gradient decreasing |
| 889.5818 | 889.5812 | 0.67 | PI(38:2) | Crypt-villi axis, gradient decreasing |
| 909.5511 | 909.5499 | 1.33 | PI(40:6) | Crypt-villi axis, gradient increasing |