Description

Grass frogs (Rana forreri) are, without a doubt, the most popular specimen for classroom dissection. Their place in the phylogenetic structure, convenient size and low cost make it the ideal dissection specimen. Recognizing this, we have made a commitment to provide frog specimens of high quality, ready availability and low cost. Frey Scientific's frog specimens come from populations whose numbers and distribution have increased due to the construction of irrigation canals throughout the western coastal plains of Mexico. Preserved in a non-formaldehyde holding solution. Double injected - arterial system injected with red latex and hepatic system injected with blue latex. Frey Choice preserved specimens are initially preserved in a formaldehyde-based solution for optimum shelf life. They are thoroughly washed and stored in Frey Secure odorless holding solution, which is 100% formaldehyde-free.