Related Clues:

• It's composed of three quarks
• Atomic constituent
• Positively-charged particle
• Particle with positive charge
• One is paid not to be backward one particle
• Is there a particle of weight for the professional?
• The professional is positively not up to it - even a particle
• Is one paid to get over a particle of weight?
• Is there a particle of weight to be attached to a professional?
• Troop to the North with little positive charge there
• Is the professional not up to something positive?
• One is paid not to back this one particle
• A professional is not positively up to this
• Is a professional not up to being so positive
• Positively just a little bit charged