Assertion: negative bacteria | /r/MadeOf | thin layer of peptidoglycan
Facets:
value: between these membranes
type: LOCATION
Source sentences:
text: In contrast to gram-positive bacteria, all archetypical gram-negative bacteria are bounded by a cytoplasmic membrane and an outer cell membrane; they contain only a thin layer of peptidoglycan (2–3 nm) between these membranes.