1963 年 10 巻 2 号 p. 89-99
Since Shepard's work (1) in which the HeLa cells, which were derived from human cervical cancer, had been for the studies on the mycobacteria-cell infection system, the application of the cells has been seen in a great number of reports concerning the host-parasite relationship (2-12). Because the established cells are not difficult to maintain in vitro, and these cells can be obtained easily any time under the same conditions, it may be expected that these established cells can be used for the studies on the host-parasite relationship in order to analyze the factors included in this infection system. In this paper, the fundamental data concerning the utilization of the established cells, especially the phagocytosis by varions kinds of cells, are described as a part of a series of the studies on the Streptococcus-cell infection system.