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docs/design.csv

+Sample,fastq_R1,fastq_R2
+sample1,pbmc_1k_v2_S1_L001_R1_001.fastq.gz,pbmc_1k_v2_S1_L001_R2_001.fastq.gz
+sample2,pbmc_1k_v2_S2_L001_R1_001.fastq.gz,pbmc_1k_v2_S2_L001_R2_001.fastq.gz
+sample2,pbmc_1k_v2_S2_L002_R1_001.fastq.gz,pbmc_1k_v2_S2_L002_R2_001.fastq.gz