Variables influencing growth and morphology of colonies of cells from human amniotic fluid

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Abstract
Growth of cells from amniotic fluid was studied with respect to cell concentration in the inoculum, blood contamination of the fluid, fluid colour, fluid clarity, gestational age of the pregnancy, and growth factors. Dependent variables measured were colony formation, colony size, and colony morphology after 7, 11, and 14 days of culture. The following conclusions were established from these studies: small sample volumes are the most efficient for producing colonies; cells from very bloody or dark brown fluids have a slower rate of growth; growth of cells from cloudy (noncontaminated) fluids is better than growth of cells from clear fluids; the proportion of colonies that are epithelioid varies with gestational age; the stimulating effect of 100 ng/ml fibroblast growth factor on cells from amniotic fluid was confirmed.