Table II.
List of the major proteins identified by liquid chromatography quadrupole time of flight.
| Band position | Protein | Score (Ion score>50) | Mass (m/z) | Match (n) |
|---|---|---|---|---|
| 15 (kDa) | Hemoglobin subunit β | 1937 | 16102 | 59 |
| Hemoglobin subunit δ | 760 | 16159 | 36 | |
| Prolactin-inducible protein | 523 | 16847 | 25 | |
| Apoliprotein D (fragment) | 219 | 15305 | 27 | |
| Ig α-1 chain C region | 214 | 38486 | 11 | |
| Ig γ-1 chain C region | 81 | 36596 | 3 | |
| Putative zinc-α-2-glycoprotein-like 1 | 79 | 23080 | 4 | |
| Immunoglobulin J chain (Fragment) | 78 | 18509 | 2 | |
| 20 (kDa) | Serum albumin | 4942 | 71317 | 163 |
| Apoliprotein D | 880 | 24541 | 40 | |
| Clusterin (fragment) | 147 | 33794 | 9 | |
| Prolactin-inducible protein | 132 | 16847 | 12 | |
| α-1-Antitrypsin | 54 | 46878 | 2 | |
| 50 (kDa) | Ig α-1 chain C region | 1483 | 38486 | 59 |
| Ig α-2 chain C region | 1483 | 37301 | 62 | |
| Apoliprotein D | 777 | 24541 | 36 | |
| Serum albumin | 625 | 71317 | 23 | |
| Ig heavy chain V-III region BRO | 291 | 13332 | 9 | |
| Ig heavy chain V-III region CAM | 102 | 13773 | 6 | |
| Prolactin-inducible protein | 227 | 16847 | 15 | |
| Complement C4 β chain | 172 | 194351 | 3 | |
| α-1-Antitrypsin | 154 | 46878 | 9 | |
| Ig γ-1 chain C region | 140 | 36596 | 13 | |
| Secretoglobin family 1D member 2 | 117 | 10260 | 6 | |
| Zinc-α-2-glycoprotein | 101 | 34465 | 7 | |
| Polymeric immunoglobulin receptor | 88 | 84429 | 7 | |
| Vasorin | 79 | 72751 | 2 | |
| Ig κ chain C region | 75 | 11773 | 6 | |
| Ig γ-2 chain C region | 68 | 36505 | 9 | |
| Chromosome-associated kinesin KIF4A | 54 | 141390 | 2 | |
| 200 (kDa) | Serum albumin | 1290 | 71317 | 60 |
| Apoliprotein D (fragment) | 102 | 24541 | 8 | |
| Cdc42 effector protein 4 | 53 | 30253 | 2 |
Bold font represents the most abundant proteins in the nipple aspirate fluid. Ion score indicates the reliability of the results. Ig, immunoglobulin.