Abstract
Transplantability of successively cultivated human amnion cell to conditioned rats was demonstrated.
1) Fifty passaged human amniotic cell (Strain H) which derived from normal person had produced the tumor in the X-radiated and cortisone-treated rats, just as HeLa cell.
2) Transfer of the first generation of H rat tumor to the second generation of conditioned rats was successfuly done.
3) Regrown of H-rat and HeLa-rat tumor cell in tissue culture was carried out and subcultivation of these regrown cell line was now in progress. (H-R cell and HL-R cell).
4) Immunocytotoxicity of anti-H and HeLa-rabbit sera on the H-R cell and HL-R cell in vitro was demonstrated.
5) Malignancy of H cell was discussed.
