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  1. Microscopy: Intro to microscopes & how they work (article

    In most cases, the part of a cell or tissue that we want to look at isn't naturally fluorescent, and instead must be labeled with a fluorescent dye or tag before it goes on the microscope.

  2. Microscopic structure of bone - the Haversian system

    In this video we will explore the microscopic structure of bone or the Harvesian system in depth. Discover the difference between spongy and compact bone, learn about the function of …

  3. Components of blood (article) | Khan Academy

    One group, the granulocytes, includes neutrophils, eosinophils, and basophils, all of which have granules in their cytoplasm when stained and viewed on a microscope. The other group, the …

  4. Phases of mitosis | Mitosis | Biology (article) | Khan Academy

    The great majority of the cell divisions that happen in your body involve mitosis. During development and growth, mitosis populates an organism’s body with cells, and throughout an …

  5. Anatomy of a skeletal muscle cell (video) | Khan Academy

    So if we look at our muscle cells under a microscope, we'll see that they've got these striations on them, these bands, because remember, another name for skeletal muscle is striated skeletal …

  6. Cell parts and functions (article) | Khan Academy

    Label the parts of the animal cell. Click each dot on the image to select an answer.

  7. Anatomy of a skeletal muscle fiber (video) | Khan Academy

    And all of this terminology comes out of when people just looked under a microscope and they saw these lines, they started attaching names to it. And just so you have the other terminology …

  8. Prokaryotic and eukaryotic cells (video) | Khan Academy

    Eukaryotic cells contain membrane-bound organelles (such as the nucleus and mitochondria), while prokaryotic cells do not. DNA in eukaryotic cells is found inside the nucleus, while DNA …

  9. Cell biology and microscopy (article) | Khan Academy

    The colors come from fluorescent (light-producing) dyes that are used to label different molecules in the specimen. Scientists use fluorescence microscopes to observe the role of specific cell …

  10. Comparing animal and plant cells (video) | Khan Academy

    Explore the differences between animal and plant cells, including their parts and functions, with this educational video on Khan Academy.