Fig. 5.

Purified biotinylated Type I keratin was microinjected into PtK2 cells and cells were fixed and processed for immunofluorescence with anti-biotin (Fig 5, A, C, E) and anti-keratin (Fig. 5 B, D, Figure legends F) at different time intervals (20 min [A,B], 1hr [C,D] and 4hr [E,F] post-microinjection). Taken from reference: (Miller et al., 1991).