Konus Prepared Slides for Konus Kids Microscopes Set of 25 Human Body Structure of Organs. Each Konus Microscope Prepared Slide is 1" x 3" with 3/4" a square specimen area. To the wide selection of 10-piece slide sets Konus has added another 3 series of 25 slides that explores the inside of the animal world in which the begins from the simplest beings made by a single cell as Prorozoa right up to Insects going across the Celenterates. These Microscope Prepared Slides that were prepared by Konus also permit the young scholar to complete his travel along the animal world observing with the Microscope Accessories the characteristics of more complex animals those made by many thousands of billions of cells.