KAAP309 Lecture Notes - Lecture 3: Prostate Cancer, Ultimate Tensile Strength, Extracellular Fluid
14 Sep 2016
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Groups of cells that are similar in structure and perform a common/related function (slice) cut into thin enough sections for light or electron transmission. *possibility of distortion of tissue from fixation, sectioning, staining* Artifact (preserve) treat with a chemical that prevents further decay (add contrast) treat with chemicals that add color to the sample minor distortion. Different parts of cells and tissues take up different dyes. Helps distinguish anatomical structures from each other: electron microscopy. Add heavy metal stain to deflect electron beam. Shades of grey images because color is light property not electron property. May be artificially colored to enhance contrast. Lead to much better understanding of cell biology see smaller cells much clearer and in 3d. *sheet of cells that covers a body surface or lines a body cavity* Apical surface: side that faces the outside of the body/organ. Most have microvilli to increase the surface area.
