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Fig. 3. Identification of glue proteins from slug and land snail glue. (A) SDS-PAGE comparison between equal amounts of trail and adhesive mucus (glue) from the slug A. subfuscus. Arrowheads mark the 15 and 61 kDa proteins that are significantly more common in the adhesive mucus. (B) SDS-PAGE comparison between roughly equal amounts of trail and adhesive mucus from the land snail H. aspersa. Molecular mass markers are in the right lane, from top to bottom: 205, 116, 97, 84, 66, 55, 45 and 36 kDa.