A stye is a pimple or abscess that forms in either the upper or lower eyelid. It is an inflammation caused by blockage of an oil duct and bacteria that normally live on the surface of the eyelid without any problems. Some germs can get trapped along with dead skin cells along the edge of the eyelid.
The single most abundant protein in the human body is Collagen. It is the main component of connective tissue, making up about 25% to 35% of the whole-body protein content.
But i know for plants that Rubisco is the most abundant protein in the world. As for animals, i agree it would probably depend on the cells. Most house-keeping proteins would be quite abundant. I would imagine Ribosomal protein would be quite abundant any animal.