Human epidermal growth factor concentrations in urine, but not in saliva and serum, depend on thyroid state

Growth factor-induced proliferation of h

Growth factor-induced proliferation of human fibroblasts in serum-free culture depends on cell density and extracellular calcium concentration

✍ Christer Betsholtz; Bengt Westermark 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 872 KB

## Abstract Human neonatal skin fibroblasts plated sparsely in MCDB 105 traversed a complete cell cycle in the absense of serum or serum‐derived proteins. Addition of pure PDGF did not significantly increase entrance into S phase as revealed by ^3^H‐thymidine labeling index or clonal growth on pall