𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Carcinomas induced by cell lines cultivated from normal mouse placentas

✍ Scribed by T. Log; K. S. S. Chang; C. Hsu

Book ID
102865939
Publisher
John Wiley and Sons
Year
1981
Tongue
French
Weight
789 KB
Volume
27
Category
Article
ISSN
0020-7136

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✦ Synopsis

Abstract

Cell lines have been established from placentas of various strains of mice by in vitro cultivation. The established lines appear to be trophoblast cells as judged from their production of gonadotropin‐like substance and steroid hormones. The cell lines lack detectable H‐2 antigen, Fc receptor sites, Thy I antigen and surface immunoglobulin determinants. In addition, the cells are resistant to murine type‐C RNA tumor virus infection. The resistance is due to a block of viral replication after the stages of viral adsorption and penetration. The cell lines induced carcinomas after injection into adult mice of original host strains. Usually at least 2 Γ— 10^6^ cells are required to induce tumors by i.p. or s.c. injection. Transplantation of the tumor cells to various strains of mice revealed that some strains accepted and some strains rejected the transplant. Genetic crossings between susceptible and resistant mouse strains indicate that susceptibility to transplantation of tumor is determined by a single pair of dominant autosomal genes.

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