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  • Title: Embryogeneic cell type, organ site sequence specificity in human cancers.
    Author: Cuatico W, Cheung CH.
    Journal: Cancer Res; 1977 Nov; 37(11):4166-72. PubMed ID: 908051.
    Abstract:
    An extensive series of cross-hybridization studies were carried out with the DNA-RNA molecular hybridization technique. Molecular 70 S [3H]DNA probes synthesized from human central nervous system, gastrointestinal, pulmonary, and prostatic carcinomas were hybridized to cytoplasmic RNA's isolated from cancers of virtually all organ sites of the human body. Results indicated sequence homology between cancers of the same organ or cell type but not with cancers of different cell types. Thus cell types based on embryological origins determine the organ site specificity of the involved sequences. The designation of 70 S [3H]DNA denotes those [3H]DNA's that were copied off the template 70 S RNA, as distinguished from total [3H]DNA product, which includes all DNA's synthesized. It does not necessarily follow nor is it to be inferred that the 70 S [3H] DNA thus designated contains the full complement of the sequences found in the 70 S RNA template.
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