Related Clues:

• __ acid (protein component)
• Kind of protein-building acid
• Antiseptic acid
• Strong acid
• Acid used in anemia treatment
• -- acid
• ___ acids
• _____ acid
• __ acid (protein building block)
• With 71-Down, protein building block
• Kind of acid found in protein
• Of element 5
• Acid used in fertilizers and explosives
• Part of a chemistry group
• Nitrogen/hydrogen radical