T1E1T1R1A1P3Y4R1R1O1L1E1S1
18 points
TETRAPYRROLES is validvalid
TETRAPYRROLE,
TETRAPYRROLE, a chemical group consisting of four pyrrole rings joined either in a straight chain or in a ring, as in chlorophyll
TETRAPYRROLE,
TETRAPYRROLE, a chemical group consisting of four pyrrole rings joined either in a straight chain or in a ring, as in chlorophyll