Table 1.
Summary of existing forms and critical sources of SCFs discussed in the indicated references.
| Forms | Critical sources | Reference |
|---|---|---|
| Liquid form (Protein supplementation) | Granulosa cells and pig ovaries | Kim et al. 32 |
| Membrane-associated KL proteins | Human ovaries, cultured granulosa-luteal cells, gonadotropins | Laitinen et al. 34 |
| Soluble forms of SCF (full-length and internal isoforms) | Granulosa cell layer, endothelial tissue, theca layer, oocytes, corpus luteum | Brankin et al. 35 |
| Membrane-bound and soluble forms | BM-derived stromal cells | Cosgun et al. 37 |
| Cytokine form | BM-derived stromal cells | Grinenko et al. 38 |
| Soluble and membrane-bound forms | BM-derived endothelial and perivascular cells | Ding et al. 40 |
| Human SCF and SCF-GFP forms | Adipocytes, Lepr+ cells, and ECs | Zhou et al. 41 |
| Human SCF | Lepr+ cells, and ECs | Comazzetto et al. 42 |
| Membrane-bound and secreted forms | Lepr+ cells, and ECs | Kara et al. 43 |
| Soluble SCF | Schwann cells (nf1 mutant) | Yang et al. 44 |