Table 1. Antibodies used in the study.
| Antigen | Antibody | Source | Dilution |
| Fibronectin | Mouse mAb 568 | Ref. [56] | 1∶60 |
| α1/α2 type IV collagen | Mouse mAb M3F7 | Developmental Hybridoma Bank | straight |
| α6 type IV collagen | Rat mAb H63 | Ref. [56] | straight |
| Laminin α2 | Mouse mAb 1F9 | Ref. [56] | straight |
| Laminin β1 | Rat mAb LT3 | Ref. [56] | straight |
| Laminin β2 | Mouse mAb C4 | Developmental Hybridoma Bank | straight |
| Laminin γ1 | Rat mAb A5 | Ref. [56] | straight |
| Laminin γ2 | Mouse mAb MAB19562 | Millipore | 1∶50 |
| Laminin γ3 | Rabbit pAb R96 | Ref. [44] | 1∶200 |
| Perlecan | Rat mAb C11L6 | Ref. [64] | straight |
| Nidogen-2 | Rabbit pAb 1080 | Ref. [56] | 1∶200 |
| Keratin 14 | Mouse mAb sc-53253 | Santa Cruz Biotechnology | 1∶10 |
| Keratin 15 | Mouse mAb sc-47697 | Santa Cruz Biotechnology | 1∶10 |
| ΔNp63 | Goat pAb sc-8609 | Santa Cruz Biotechnology | 1∶20 |
| PAX6 | Rabbit pAb PRB-278P | Covance | 1∶100 |
mAb, monoclonal antibody; pAb, polyclonal antibody.