to ascertain whether the above observations of keratinocytes that were undergoing normal proliferative and differentiating phases in culture are consistent with the more synchronized populations of proliferative and differentiating cells , we investigated the turnover of ptdins in a ca2+-regulated system of homogenous populations of proliferating mouse keratinocytes in 0.09 mm ca2+ , and a differentiating population in 1.8 mm ca2+ .
C0022567
observations
C0007634
cells