| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| R0KBI5 | Metalloendopeptidase-like protein PEX; Fragment; | NULL | XP_005010894.1; | 747 | mallard |
| R0KB04 | Uncharacterized protein; | NULL | NULL | 297 | mallard |
| U3J690 | Uncharacterized protein; Fragment; | TMEM178B; | NULL | 135 | mallard |
| C7AFF2 | Putative uncharacterized protein; Fragment; | NULL | NULL | 143 | mallard |
| I0CE42 | MHC class I antigen; Fragment; | Anpl-UAA; | NULL | 87 | mallard |
| R0KC26 | Uncharacterized protein; | NULL | NULL | 190 | mallard |
| U3IY52 | Uncharacterized protein; Fragment; | NULL | NULL | 78 | mallard |
| U3IR64 | Protein S100; S100 calcium-binding protein; | S100A4; | XP_005031765.1; | 101 | mallard |
| D0V089 | Cytotoxic T lymphocyte-associated antigen-4; | CTLA-4; | NULL | 153 | mallard |
| Q24KA3 | Invariant chain; Fragment; | Ii; | NULL | 218 | mallard |
| Q98SQ1 | Interleukin-18; Fragment; | IL-18; | NULL | 211 | mallard |
| U3I0X4 | Uncharacterized protein; Fragment; | IGSF6; | NULL | 120 | mallard |
| R0KCA9 | Voltage-gated potassium channel subunit beta-2; Fragment; | NULL | NULL | 338 | mallard |
| U3I3Q2 | Uncharacterized protein; Fragment; | NULL | NULL | 152 | mallard |
| U3I498 | Uncharacterized protein; Fragment; | LOC101803634; | NULL | 835 | mallard |
| I0CE25 | MHC class I antigen; Fragment; | Anpl-UAA; | NULL | 87 | mallard |
| U3I410 | Protein tweety homolog; Fragment; | TTYH3; | NULL | 466 | mallard |
| U3I3B4 | Uncharacterized protein; Fragment; | ACKR3; | NULL | 361 | mallard |
| U3I5L8 | Uncharacterized protein; Fragment; | UNC13A; | NULL | 439 | mallard |
| U3I7P3 | Uncharacterized protein; | DNAJC17; | NULL | 312 | mallard |
