Table 2.

Summary of current single cell RNA-seq studies on human placenta.

Gestational age (weeks)	Tissue	Number of cells	Number of placenta	Single cell isolation	Platform	Average reads length (bp)	Mean Pair-end reads	Reference
6–11	Villous, decidual	14,341 6754	9	Enzyme	10x Drop-seq	100	N/A	Suryawanshi et al. (2018)
6–14	Placenta, blood	70,000	5	Enzyme, FACS	10x Smart-seq2	75	1 × 106	Vento-Tormo et al. (2018)
8, 24	Placenta	1,567	8	Enzyme, gradient centrifugation, MACS	Smart-seq2	150	1 × 106	Liu et al. (2018)
11–13	Placenta	7245	10	Enzyme	10x	N/A	N/A	Sun et al. (2019)
Term	Placenta	87	2	Enzyme, gradient centrifugation	Fluidigm	75	3.65 × 106	Pavličev et al. (2017)
Term (preeclampsia or healthy)	Placenta, blood	24,000	8	Enzyme	10x	130	35800	Tsang et al. (2017)
Term (with or without labor) preterm (33–35 weeks)	Placenta	79,906	9	Enzyme	10x	N/A	N/A	Pique-Regi et al. (2019)