we studied the ability of a commercial charcoal hemoperfusion cartridge ( hemosorba hemoperfusion cartridge , asahi medical company ) to adsorb the porphyrin precursors delta-aminolevulinic acid ( ala ) and porphobilinogen ( pbg ) in vitro .
C2917401
porphyrin precursors
C0002563
delta-aminolevulinic acid