Ribosome crystallization in normal and in Marek's disease affected chicken

By utilizing a slow cooling process the occurrence of ribosome crystallization has been demonstrated in lymphoid infiltrating cells in tumorous organs of chickens affected with Marek's disease but not in the parenchymal cells of the same organs. Moreover the slow cooling treatment can induce ribosome crystallization in proliferating cell populations of normal chickens but not in stable differentiated cell populations. This morphological evidence permits the formulation of an hypothesis which correlates the formation of ribosome crystalline aggregates to the inhibition of the ribosome apparatus during some phases of the cell cycle.