What Is Lyophilization? How It Preserves Amniotic Tissue? The human amniotic membrane is used in wound cover, ophthalmology, and biological tissue due to the presence of natural growth factors and proteins that promote healing. Article source: This article was originally published on : https://www.cellutionbiologics.com/a/blog/technology/what-is-lyophilization-how-it-preserves-amniotic-tissue