TEM figures for each sample type. a: Amniotic fluid, lean. b: Amniotic fluid, overweight. c: Amniotic fluid, obesity. d: Maternal feces, lean. e: Maternal feces, overweight. f: Maternal feces, obesity. Images were taken with a magnification of 18,500–30,000. The scale bar for each figure is 200 nm. Credit: BMC Medicine (2026). DOI: 10.1186/s12916-026-04960-3
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