EN
Embryonic cells, when cultured at high density, are referred to as „micromass” cultures and can be used as a tool to predict the teratogenic potential of xenobiotics in screen test. The rate of proliferation and differentiation can easily be measured quantitatively by simple staining methods with subsequent spectrophotometry. However, reproducibility of the results can be influenced by variability of the technique. To adapt this method in our laboratory systematic series of experiments with limb bud cell cultures were undertaken. Inter-relationships between different variables were checked.