Product Details Preserved rats have become increasingly popular as dissection specimens for exploring mammalian anatomy. These fully developed animals display mature organs and organ systems, allowing students to easily examine muscular, cardiovascular, digestive, and reproductive structures. The specimens are: Small and convenient to dissect with little fluid in the body cavity Great comparisons for human anatomy because of their similar body plan Economical Product Features Double injected (red arteries and blue systemic veins) for in-depth study of the circulatory system. Immersed in Perfect Solution holding fluid, packaged in 1- to 5-gal pails, and sealed with leak-proof, reusable lids. Ideal for long-term storage. Prices listed are for 1 specimen. Carolina's Perfect Solution® Carolina's Perfect Solution® is a proprietary fixative that produces the safest and highest quality specimens on the market. Perfect Solution® specimens are safe and nontoxic, produce no dangerous off-gassing, and require no special disposal. The lifelike color and tissue texture allow students to easily identify structures and learn anatomy. Learn More.