Specific

amniotic fluid bile bone marrow cerebrospinal fluid cerumen epidural (peridural) space extracellular matrix (ECM) gastric fluid interstitial space (fluid) intestinal lumen intestinal secretion milk plasma pulmonary alveolus saliva sebum semen space of disse synaptic cleft synovial fluid tears urine vitreous humor (vitreous, vitreous gel, V)