Dermal fibroblast of the skin. Dermal fibroblasts are derived from mesenchymal stem cells within the body. Like corneal fibroblasts, dermal fibroblast proliferation can be stimulated by the presence of fibroblast growth factor (FGF). Fibroblasts do not appear to be fully differentiated or specialized. After examining the CD markers of the fibroblast cells, researchers at BioMed Central discovered that these cell lack "distinctive markers" confirming that these cells can be further differentiated. One example of further differentiation of dermal fibroblasts is that upon injury, dermal fibroblasts can give rise to myofibroblasts, fibroblast cells with smooth muscle characteristics. Dermal cells differentiate into myofibroblasts by
What Kate Does the death of his love Juliet Burke (Elizabeth Mitchell) just hours earlier. In flash sideways to September 22, 2004, Kate assists a pregnant Claire Littleton (Emilie de Ravin) while on the run as a fugitive. The title alludes to the second season episode "What Kate Did". "What Kate Does" was watched by eleven million Americans and received mixed reviews by audiences and critics alike. In flash sideways, Kate Austen (Evangeline Lilly) flees LAX in a taxicab she has hijacked, in which a pregnant Claire Littleton (Emilie de Ravin) is a passenger. The cab driver (David H. Lawrence XVII) bails and