The centrosome or centrosphere is usually regarded as the dynamic centre of the cell and a special organ of division; but its absence in many groups of plants does not lend support to this view so far as plant-cells are concerned.
Karyokinetic figure, the one centrosome much larger than the other.
Its proximal centrosome (its distal one vanishing as such).
Where pigment was present within the cells (sarcoma), the attraction-spheres were represented by quite clear unpigmented areas, sometimes with a centrosome in their midst.
The attraction-sphere and centrosome lie in the cytoplasma in the neighbourhood of the nucleus.
Centrosome.The centrosome is a minute homogeneous granule found in the cytoplasm of some cells in the neighborhood of the nucleus.