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Number of amniotic membrane pieces taken from the certain placentas and worked up after different freezing times. The A–G marks show the 7 different placentas used for the experiment. The numbers show the pieces taken from the certain placenta and processed freshly or after the signed time long freezing.
| Placenta | fresh | 2–4 months | 5–8 months | 13-14 months |
|---|---|---|---|---|
| A | 2 | |||
| B | 2 | |||
| C | 2 | 1 | ||
| D | 5 | |||
| E | 1 | 4 | ||
| F | 4 | |||
| G | 5 |
