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A few days ago, and within the subject of Science, we could do different observations of human specimens already prepared to the microscope. We could observe since the skin until a part of the wall of the heart, going through specimens of bones, kidneys spinal cord or lungs. It was a very productive and also attractive activity because we could see a lot of human specimens and manipulate these laboratory apparatus called microscopes that teach us those small things that can not see to simple view.
there is a link to learn the time, you must watch it.
The Story of Treasure Island