After the description of fibrinogen and fibrin, Alexander Schmidt hypothesised the existence of an enzyme that converts fibrinogen into fibrin in 1872.
Omar Devone Little is a fictional character on the HBO drama series The Wire, portrayed by Michael K. Williams.
Joe Spano also reprised his role as Senior FBI Agent Tobias C. Fornell in the first two episodes. Muse Watson (as Mike Franks) appeared in the fourth episode. Ralph Waite (as Gibbs' father Jackson Gibbs) and Robert Wagner (as Tony's father Anthony DiNozzo, Sr.) are also confirmed to return.