[Repair of the protein structures of ciliated epithelial cells after heat damage]

A study has been made of the ability of ciliated pharengial cells of Rana temporaria L. to repair heat injury. The heat injury estimated by cessation of cellular motile activity has been shown to repair, ciliar movements being renewed. The reparation of the ciliar function is due to the restoration of nativity of the intracellular protein structures providing for the ciliar motility. These structures can be repaired only when they are a component of the whole living cell system; they are not capable of spontaneous renativation, however, when isolated as "glycerinized cell models". It is suggested that the reparation of heat injury in these cells is an active process, presumably dependent on the intracellular metabolism.