So while brown stercobilin, red phycoerythrin, green phycoverdin, and blue phycocyanin all have similar structures with lots of alternating bonds, the differences in color aren't necessarily closely tied to any one part of their structure.    From Wordnik.com.  [Science Question from a Toddler: Why is poop brown? Boing Boing] Reference

This size class was consistently phycocyanin (PC) - rich.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

Most importantly, Cryptomonadales contains natural phycocyanin and PPARs agonists.    From Wordnik.com.  [WN.com - Articles related to PNG to benefit from increased coffee prices] Reference

In addition to R-phycocyanin (R-PC) and APC, two different spectral types of PEs were found in.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

They are pigmented with allophycocyanins, phycocyanin, and phycoerythrin that are located in phycobilisomes.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

Ledon, N., and Garcia, I. "Antioxidant and anti-inflammatory properties of C-phycocyanin from blue - green algae".    From Wordnik.com.  [Wil's Ebay E-Store]

Her goal is to develop a detection system based on the wavelength of light reflected from phycocyanin, the blue-green pigment that gives cyanobacteria their common name.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

Eucommia Bark (12: 1 extract; 54 mg) - Contains phycocyanin, a powerful anti-oxidant and immune enhancer & provides vegetarian pre-made glycogen, an energy source for our immune system.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

In Penascola Bay in Florida, the proportion of phycocyanin-rich to phycoerythrin-rich strains of Synechococcus decreased dramatically from ~ 20 PSU to 28 PSU, i.e. PC-rich cells were an order or magnitude higher in abundance in the upper, lower salinity, part of this estuary.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference