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1. Dogfish (Scyllium) vertebral column transversal section; \r\n2. Fresh water fish, region of gills transversal section; \r\n3. Fresh water, region of tails, transversal section; \r\n4. Fish scales, various types whole mount; \r\n5. Tadpole, frog larva, transversal section through body; \r\n6. Frog (Rana) blood smear; \r\n7. Frog (Rana) tongue transversal section; \r\n8. Frog (Rana) intestine transversal section; \r\n9. Frog (Rana) lung transversal section; \r\n10. Salamander skin, transversal section with poison glands;