GIANTmicrobes&reg; Diabetes Beta Cell plush doll Pancreatic beta cells produce insulin which helps regulate sugar levels in the body. Learn how they work and what happens when they don't. Includes a hangtag with an image and fun and educational facts about diabetes beta cell. Each plush cell contains a zippered pouch. Inside you'll find an Insulin hormone modeled from a REAL Insulin molecule. Humorous, Educational Fun. Each 5-to-7 inch doll is accompanied by an image of the real microbe it represents, as well as information about the microbe.