
The Frog Liver Sec. (Animal Cells Slide) by United Scientific is a prepared microscope slide with a section of frog liver, ready to view without any sample collection or staining in class. It gives students a tissue made almost entirely of closely packed animal cells, which makes it a practical first slide for identifying the cell membrane, cytoplasm and nucleus in a real organ rather than a diagram. It is sold as a single slide and used by biology teachers and lab instructors in schools, colleges and university teaching labs.