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Table 1 Sample types studied

From: Comparison of placenta samples with contamination controls does not provide evidence for a distinct placenta microbiota

Sample Collection protocol/comments
Air swab Swab of the air from the clinical laboratory where the placental samples were obtained
Sterile swab Unopened sterile swab
Extraction blank Blank tubes for possible extraction/reagent contaminants
Placenta (MS) Basal plate biopsy obtained after removal of placental surface
Placenta (FS) Placental biopsy obtained after removal of placental surface
Saliva Collected in sterile 50-mL conical tube
Vaginal swab Swab inserted into maternal vagina for 30 s