THE FORMATION OF SUBNUCLEAR AGGREGATES IN NORMAL AND SYNCHRONIZED PROTOZOAN CELLS

Abstract

1. The formation of "subnuclear aggregates" (SNA's) is studied quantitatively in synchronously-dividing cells of Tetrahymena pyriformis strain GL. 2. In normal cultures approximately 16 per cent of the cells were found to contain SNA's. This value rise to 55 per cent after synchronous division. The SNA/macronuclear volume ratio is 0.72 per cent in normal cells and 2.8 per cent in cells after synchronous division. 3. The possible significance of the formation of SNA is discussed.