IgG2a, immunoglobulin G2a.
| Antigen | Species | Isotype | Dilution | Source | Reference |
| Gs | Mouse | IgG2a | 1:1000 | Merck | MAB302 |
| Sox2 | Mouse | IgG1 | 1:200 | Abcam | ab171380 |
| DsRed | Rabbit | 1:250 | Takara | 632496 | |
| BrdU | Rat | IgG2a | 1:150 | Abcam | ab6326 |
| Pcna | Mouse | IgG2a | 1:500 | Santa Cruz Biotechnology | PC10 |
| GFP | Chicken | IgY | 1:1000 | Aves Labs | GFP-1020 |
| Estrogen receptor α | Rabbit | IgG | 1:200 | Abcam | ab16660 |
| mCherry | Chicken | 1:1000 | EnCor Biotechnology | CPCA-mCherry | |
| Cleaved caspase-3 | Rabbit | 1:500 | Cell Signaling Technology | 9661 |