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.
1 to 6 are from the epithelial cells of a cancer of the mamma, (After Galeotti.) „ 7 to 21 are from a sarcoma.
Trambusti, curiously, finds confirmatory evidence of this in the division of cells in sarcoma.
The sarcomatous development may even completely outgrow the epithelial elements and so form and continue to grow as a pure sarcoma.
- Small round-celled sarcoma.