HUMAN EARLY EMBRYONIC DEVELOPMENT MODELS SET (2967) Twelve separate models on one large, flat base clearly display the development of a human embryo from shortly after fertilization to the fetus at two months. Models 1-8 are enlarged 4,000x. The eight models are mounted on a common base, and each can be removed for closer study. The set comes with a manual identifying eight structures and a storage carton. Qty :