Fig. 7. Parentage verification of aborted fetus. (A) Image of spontaneous abortion of fetuses “a,” “b,” and “c” on day 103 post- embryos transfer. (B) Four examples of STRs from fetus “a,” “b,” and “c,” oocyte donor, sperm donor and surrogate, half of them were from the oocyte donor and half from the sperm donor. Complete list of STRs are shown in Supplementary Table 1.

(C) Examples of electrophoreses signal about amplification products of D8S1106, D11S925, D17S1300, D18S72 sites for fetus “a,” “b,” and “c,” oocyte donor, sperm donor and surrogate, showing fetus “a,” “b,” and “c” have parent-child relationship with oocyte donor and sperm donor.

STR, short tandem repeat.