For CEL-Seq2 single-cell library preparation (58 (link)), a nanoliter pipetting robot (mosquito HTS, TTP Labtech) was used to reduce the CEL-Seq2 protocol original volumes by fivefold. The 384-well plates (Corning, PCR-384-RGD-C) were prepared with 240 nl of lysis buffer in every well in these final ratios: 20 nl of 10 mM deoxynucleotide triphosphate (1:12), 40 nl of 1:100,000 ERCC spike mix 1 or 2 (2:12), 140 nl of water with 0.35% Triton X-100 (7:12), and 40 nl of 25 ng/μl of uniquely barcoded polydT primers with unique molecular identifier (UMI; 2:12). Hydrophobic encapsulation barrier (1.2 μl; Vapor-Lock, QIAGEN, 981611) was lastly added to every well.