| Answer | Crossword Clue |
|---|---|
| histaminase | a digestive enzyme that converts histadine to histamine |
| histaminases | HISTAMINASE, a digestive enzyme that converts histadine to histamine |
| urase | an enzyme that converts urea to a salt, also UREASE |
| urease | an enzyme that converts urea to a salt, also URASE |
| ureases | UREASE, an enzyme that converts urea to a salt, also URASE |
| urases | URASE, an enzyme that converts urea to a salt, also UREASE |
