Physicochemioal investigations of the last years have shown that the interferons represent a very heterogenous class of molecules. Differences are not only related to the molecular weights but also to the isoelectric behaviour. Electrofocusing demonstrated that depending on the cellular origin even interferon of one species as chick interferon 1 , interferons of mouse2, rabb i t 2 4 and human c...

Exposure of rabbit reticulocytes to agents which damage the cell membrane by a variety of different mechanisms stimulates the incorporation of radioactive acetate and glycerol into membrane lipids. An increase in the rate of lipid synthesis occurs within minutes at 37’C at concentrations of the agents which do not cause spontaneous cell lysis. Different agents do not increase synthesis of diffe...