From Studies in Spermatogenesis with especial reference to the "Accessory Chromosome", Part I (p.31), N.M. Stevens,1905, Washington, DC: Carnegie Institution of Washington.
Anatomy.tv is an interactive tool for learning about the human body. It allows users to manipulate a 3D visualization to better understand the interaction of skeletal, muscular, and nervous systems and to view every part of the body in great detail. In addition, you can compare their the 3D model with dissection slides, MRI's and videos. It even has an index that allows users to select individual bones, systems, and tissues from an alphabetized list.
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