the strong red fluorescence of the cysticercus of taenia solium depends on the presence of several porphyrins in the vesicular fluid of the parasite : probably protoporphyrin ix , coproporphyin i or iii , and 2 decarboxylated porphyrins intermediate between uroporphyrin and coproporphyrin .
C0033733
protoporphyrin ix
C0032712
porphyrins