Correction to: Genome Biol 20, 295 (2019)

https://doi.org/10.1186/s13059-019-1861-6

Following publication of the original paper [1], an error was identified. In the original version of this manuscript, we referred to the Zheng 10x datasets as FACS-purified. However, based on Supplemental Table 8 of the Zheng et al. (2017) publication, the cells were actually purified by cell-type specific isolation kits that did not involve sorting by fluorescence. The authors thank Miriam Shiffman for identifying this error.