| Neurotrophins |
| NGF (nerve
growth factor) |
| BDNF (brain-derived
neurotrophic factor) |
| NT-3, NT-4/5
(neurotrophins 3 and 4/5) |
| Neuropoietic factors |
| CDF/LIF
(cholinergic differentiation factor/leukemia inhibitory factor) |
| CNTF (ciliary neurotrophic
factor) |
| OSM (oncostatin M) |
| GPA (growth-promoting
activity) |
| SGF (sweat gland factor) |
| IL-6, IL-11
(interleukins 6 and 11) |
| TGF family |
| EGF (epidermal growth
factor) |
| TGF-a
TGF-b (transforming growth factors a
and b) |
| GDNF (glial-cell-line-derived
neurotrophic factor) |
| Activin
A
|
| FGF family |
| aFGF,bFGF (acidic and
basic fibroblast growth factors) |
| FGF-5
|
| Insulin-like growth
factors |
| Insulin |
| IGF (insulin-like
growth factors)
|
| Platelet-derived
growth factors |
| PDGF |