Amplicon sequencing of neg. milk ctrl 3. Sequencing was performed as described in https://doi.org/10.3389/fmicb.2021.669776. {primers: GTGYCAGCMGCCGCGGTAA + GGACTACNVGGGTWTCTAAT, nucleic acid: DNA, flow cell identifier: LR873, barcoding: UDB-H12, plate-position: 5 B11, barcodes: GTAGGAACCGGA + GTACGTCACTGA}.