| Answer | Crossword Clue |
|---|---|
| tetrapyrrole | a chemical group consisting of four pyrrole rings joined either in a straight chain or in a ring, as in chlorophyll |
| Answer | Crossword Clue |
|---|---|
| tetrapyrrole | a chemical group consisting of four pyrrole rings joined either in a straight chain or in a ring, as in chlorophyll |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.