Assertion: phycoerythrin | /r/HasProperty | invariant
Facets:
value: among all the samples
type: OTHER
value: relatively
type: DEGREE
Source sentences:
text: Phycoerythrin (PE) emission spectra were relatively invariant among all the samples collected on either cruise; the relatively symmetrical PE emission peaks showed maxima at wavelengths ranging from 563–572 nm.