strain 23 , two other strains representing predominant biotypes of b. ruminicola subsp . ruminicola , and one closely related strain grew in media containing heme-free protoporphyrin , mesoporphyrin , hematoporphyrin , or deuteroporphyrin , apparently inserting iron into several nonvinyl porphyrins .
C0033733
protoporphyrin
C0032712
porphyrins