| Protein sources | 15 |
| Protein source from California | 30 |
| Protein source for vegetarians | 30 |
| Protein source for vegans | 25 |
| Protein source for Maoris | 25 |
| Protein source | 14 |
| Protein shell | 13 |
| Protein shake spoonful | 22 |
| Protein providers | 17 |
| Protein production aid | 22 |
| Protein producer, for short | 27 |
| Protein producer | 16 |
| Protein powder retailer | 23 |
| Protein powder purveyor | 23 |
| Protein picture sketched in like two seconds? | 45 |
| Protein obtained from flaxseed | 30 |
| Protein molecule | 16 |
| Protein messenger | 17 |
| Protein in Wheaties | 19 |
| Protein in wheat products | 25 |
| Protein in muscles | 18 |
| Protein in milk and eggs | 24 |
| Protein in milk | 15 |
| Protein in hair and nails | 25 |
| Protein hormone | 15 |
| Protein generators | 18 |
| Protein for Pliny | 17 |
| Protein for a Stockholmer | 25 |
| Protein derived from a bean | 27 |
| Protein derivatives, such as gelatin | 36 |
| Protein components | 18 |
| Protein component | 17 |
| Protein building blocks | 23 |
| Protein building block, for short | 33 |
| Protein building block | 22 |
| Protein builder (Abbr.) | 23 |
| Protein builder | 15 |
| Protein beans (Var.) | 20 |
| Protein bean | 12 |
| Protein and weight-lifting, for two | 35 |
| Protein acid, informally | 24 |
| Protein acid, for short | 23 |
| Protein acid | 12 |
| Protege of Vivaldi, Anna | 24 |
| Protege maker | 13 |
| Protege creator | 15 |
| Protegé, for one | 19 |
| Protects, in a way | 18 |
| Protects, as pots | 17 |
| Protects, as in a museum | 24 |
| Protects with heavy metal | 25 |
| Protects the quarterback | 24 |
| Protects one's rights, in a way | 35 |
| Protects from the enemy, in a way | 33 |
| Protects from disease | 21 |
| Protects by wrapping | 20 |
| Protects against tampering | 26 |
| Protects against rust | 21 |
| Protects a rock climber | 23 |
| Protects a hockey goal | 22 |
| Protects | 8 |
| Protectors of tiny shirts | 25 |
| Protectors of the reef ecosystem? | 33 |
| Protectors of the Galactic Republic | 35 |
| Protectors of QBs | 17 |
| Protectors of Peru | 18 |
| Protectors in cold weather | 26 |
| Protectors from splats | 22 |
| Protectors for peepers | 22 |
| Protector or defender | 21 |
| Protector of U.S. workers | 25 |
| Protector of the public | 23 |
| Protector of the president | 26 |
| Protector of the green | 22 |
| Protector of the dead, in myth | 30 |
| Protector of the crown? | 23 |
| Protector of Stitch in a Disney film | 36 |
| Protector of some IRAs | 22 |
| Protector of some canines | 25 |
| Protector of sailors, by tradition | 34 |
| Protector of Odysseus | 21 |
| Protector of Joshua's spies: Var. | 37 |
| Protector of Io | 15 |
| Protector of Hector | 19 |
| Protector of Daddy Warbucks | 27 |
| Protector of CDs | 16 |
| Protector of bank accts. | 24 |
| Protector of a car's front end | 34 |
| Protector in the ring | 21 |
| Protector | 9 |
| Protective, in a way | 20 |
| Protective, as a deity | 22 |
| Protective zoo feature | 22 |
| Protective wrappers | 19 |
| Protective wear in a highchair | 30 |
| Protective wear for lobster eaters | 34 |
| Protective wear for airborne toxins | 35 |
| Protective wear | 15 |
| Protective walls | 16 |
| Protective wall | 15 |