Easy to construct the three dimensional model of DNA. Emphasizing the base pair sequence and function of DNA, the sturdy, colorful bases snap together in the correct sequence, and the pairs attach to a center rod representing hydrogen bonds.
Animal cell, enlarged 20000 times, in somso-plast*. The model shows the recently discovered principles of the delicate structure of an animal cell. in one piece, on a stand with base. height: 52 cm, width: 39 cm, depth: 26 cm, weight: 3.7 kg.