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Introduce junior and senior high school students to the world of microscopy with inexpensive, unbreakable microslides. Microslides consist of a strip of film with eight photomicrographs, each reproduced exactly as you would see them through a professional microscope under ideal conditions. You can supply all your students with their own microslides. A detailed text folder is included. Viewers are available separately.

Each photomicrograph in this set shows a very thin slice of Ascaris oocytes. Each slice has been carefully selected to illustrate most clearly the process of meiosis at the various steps. The accompanying text features diagrams that summarize the entire process.

1. Primary oocyte tetrads formed (750X)
2. Primary oocyte dyads separated (750X)
3. Primary oocyte tetrads on spindle
4. Primary oocyte first polar body forming (750X)
5. Secondary oocyte chromosomes formed (750X)
6. Mature egg (750X)
7. Pronucleus stage (750X)
8. Zygote ready for first cleavage (750X)



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