Dermal fibroblast altering their actin gene expression (which is silenced in dermal fibroblasts). When dermal fibroblasts express actin, the cells can slowly contract. This contraction plays a critical role in wound healing and fibrosis. By pulling tissues closed differentiated myofibroblasts, seal the skin after an injury (thereby, preventing infection but inducing scar formation. Myofibroblasts can also be derived from non-fibroblast sources. Based on evidence of α-SMA expression from lung injuries, myofibroblasts can "arise de novo" directly from mesenchymal stem cells. Unlike other fibroblast cell types, dermal fibroblasts are far less likely to change into other cell types. For example, when a dermal
The Body (Buffy the Vampire Slayer) and Dawn. She asks why her clothes are stupid and she is childish, weeping until Tara kisses and calms her. Anya asks Xander what she is supposed to do; he cannot answer. Willow changes her shirt again and Xander expresses his desire to find Glory and exact justice, then complains about Joyce's negligent doctors. Anya asks if they will see the body, then if the body will be cut open, and Willow responds angrily. Anya tearfully says she does not understand how to behave, or why Joyce cannot go back into her own body, unable to understand human death, she