The Harderian gland and the porphyrins.
Akagi
N
N
Morimoto
T
T
Watanabe
M
M
D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D006243:Harderian Gland / Q000378:metabolism* / Q000648:ultrastructure; D007765:Lacrimal Apparatus / Q000378:metabolism*; D011166:Porphyrins / Q000096:biosynthesis / Q000145:classification / Q000378:metabolism*; D014714:Vertebrates
D011166:Porphyrins