[Ultrastructural aspects of amniotic-fluid cells B. "vital cells" (author's transl)].

It has been shown, that apart from the mass of non-vital squamous epithelial cells, there also exist vital cells in the amniotic fluid. In this study, two types of amniotic fluid cells, which upon examination based on morphological characteristics gave rise to conclusions concerning their vitality, are presented, described and correlated with morphologically similar cells with known origin. Probably one type of these amniotic fluid cells are macrophages or Hofbauer-cells and the other types could be amnion-cells.