| Answer | Crossword Clue |
|---|---|
| properdins | PROPERDIN, a natural protein in blood that helps provide immunity to infectious disease |
| Answer | Crossword Clue |
|---|---|
| properdins | PROPERDIN, a natural protein in blood that helps provide immunity to infectious disease |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.