The La (SS-B) autoantigen, a key protein in RNA biogenesis, is dephosphorylated and cleaved early during apoptosis CELL DEATH AND DIFFERENTIATION Rutjes, S. A., Utz, P. J., van der Heijden, A., Broekhuis, C., van Venrooij, W. J., Pruijn, G. J. 1999; 6 (10): 976-986