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  • Title: [Relation of the ultrastructural organization of mouse mammary gland cancer to its ability to metastasize].
    Author: Khaĭsman AE, Tereschenko IP, Iagubov AS.
    Journal: Biull Eksp Biol Med; 1979 Apr; 87(4):335-7. PubMed ID: 435624.
    Abstract:
    A quantitative ultrastructural investigation of cancer in mice mammary glands and of its metastases to the lungs was carried out. It was established that in tumors showing no metastatic spreading in experiment the area of membrane surface of the endoplasmic reticulum and the number of bound ribosomes are greater than those in tumor spreading metastases. At the same time the number of ribosomes organized into polysomes is higher in the metastasized tumors. The comparison of the tumors with their metastases revealed differences in the structure of the mitochondrial apparatus: the surface area of cristae is larger in the metastatic foci. The evidence obtained shows that tumors spreading metastases have a lower level of cellular differentiation. The primary and metastatic foci do not exhibit any difference in the level of differentiation.
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