Assertion: eye | /r/AtLocation | simple ciliary photoreceptors
Facets:
value: previously
type: TEMPORAL
value: in the brains of some invertebrates
type: LOCATION
Source sentences:
text: Bok, et al, have discovered opsins and G proteins in the fan worm's eyes, which were previously only seen in simple ciliary photoreceptors in the brains of some invertebrates, as opposed to the rhabdomeric receptors in the eyes of most invertebrates.