Subject	receptor
Predicate	be
Object	on the cells surface
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7155
Neighborhood Sigma	0.7621
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source receptors are on the cells surface involved in the selective permeability of the cell membrane 1 Answers.com Questions