Many attempts have been made to identify cultured cells by many in-vestigators. Now the ideal medium or physiological maintenance medium (Eagle), which will enable cultured cells to maintain the same characteristic properties as
in vivo, has not yet been invented. The idea on which many experiments for identification are based should be reexamined. Since the cells cultured in various media are usually much altered in their morphology, stainability and many other characters, the identification always involves theoretical difficulties. Therefore, a new method for identification of cultured human placental cells should be devised.
In this experiment, the author tried to identify trypsin-released human placental cells and discussed on the separation method of the identified cells.
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