H³-thymidine 자기방사법으로 본 마우스 조골세포분렬에 미치는 생후령의 영향

초록

The age influence on the cell renewal system of the osteoblast from mice osseous tissue has been studied by means of radioautography after the intraperitoneal injection of single dose of the tritiated thymidine. The highest active cell renewal rate was found at the age of four-days group, was followed by moderately decreased radioactive indices of one and two weeks old groups. Relatively low R.I. has been observed in three weeks old group and henceforth the R. I. became stable throughout. Slight sexual difference was noted in young adult groups, the rate of male was higher than that of the female group.